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3123210101420 = 2251723399387481
BaseRepresentation
bin101101011100101101110…
…101000010001010101100
3102001120112212210221020202
4231130231311002022230
5402132313241221140
610350441035333032
7441434025560543
oct55345565021254
912046485727222
103123210101420
11aa4600753582
124253708b1178
13198695ab1866
14ab2426d715a
1556396440915
hex2d72dd422ac

3123210101420 has 48 divisors (see below), whose sum is σ = 7246486473408. Its totient is φ = 1124675143680.

The previous prime is 3123210101381. The next prime is 3123210101423. The reversal of 3123210101420 is 241010123213.

3123210101420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×31232101014202 (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3123210101392 and 3123210101401.

It is not an unprimeable number, because it can be changed into a prime (3123210101423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199685921 + ... + 199701560.

It is an arithmetic number, because the mean of its divisors is an integer number (150968468196).

Almost surely, 23123210101420 is an apocalyptic number.

It is an amenable number.

3123210101420 is an abundant number, since it is smaller than the sum of its proper divisors (4123276371988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3123210101420 is a wasteful number, since it uses less digits than its factorization.

3123210101420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399387530 (or 399387528 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 3123210101420 its reverse (241010123213), we get a palindrome (3364220224633).

The spelling of 3123210101420 in words is "three trillion, one hundred twenty-three billion, two hundred ten million, one hundred one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 17 20 23 34 46 68 85 92 115 170 230 340 391 460 782 1564 1955 3910 7820 399387481 798774962 1597549924 1996937405 3993874810 6789587177 7987749620 9185912063 13579174354 18371824126 27158348708 33947935885 36743648252 45929560315 67895871770 91859120630 135791743540 156160505071 183718241260 312321010142 624642020284 780802525355 1561605050710 3123210101420