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312110211030 = 23529358747369
BaseRepresentation
bin1001000101010110011…
…01111101111111010110
31002211121111102111012120
410202223031331333112
520103200203223110
6355214221000410
731356245010132
oct4425315757726
91084544374176
10312110211030
11110402094072
12505a50b3106
132357ca70857
141116b64c3c2
1581ba94e870
hex48ab37dfd6

312110211030 has 32 divisors (see below), whose sum is σ = 774894319200. Its totient is φ = 80359410432.

The previous prime is 312110210963. The next prime is 312110211037. The reversal of 312110211030 is 30112011213.

It is a happy number.

It is a super-2 number, since 2×3121102110302 (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312110211037) 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, 179372815 + ... + 179374554.

It is an arithmetic number, because the mean of its divisors is an integer number (24215447475).

Almost surely, 2312110211030 is an apocalyptic number.

312110211030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312110211030 is an abundant number, since it is smaller than the sum of its proper divisors (462784108170).

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

312110211030 is a wasteful number, since it uses less digits than its factorization.

312110211030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358747408.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 312110211030 its reverse (30112011213), we get a palindrome (342222222243).

The spelling of 312110211030 in words is "three hundred twelve billion, one hundred ten million, two hundred eleven thousand, thirty".

Divisors: 1 2 3 5 6 10 15 29 30 58 87 145 174 290 435 870 358747369 717494738 1076242107 1793736845 2152484214 3587473690 5381210535 10403673701 10762421070 20807347402 31211021103 52018368505 62422042206 104036737010 156055105515 312110211030