Search a number
-
+
310102000021 = 1128191090911
BaseRepresentation
bin1001000001100111000…
…01010000000110010101
31002122102112121210121001
410200303201100012111
520040042103000041
6354243042023301
731255421336422
oct4406341200625
91078375553531
10310102000021
1110a571549450
1250124647b31
132331c9b0008
141101aa56d49
1580ee4b9131
hex4833850195

310102000021 has 4 divisors (see below), whose sum is σ = 338293090944. Its totient is φ = 281910909100.

The previous prime is 310102000009. The next prime is 310102000027. The reversal of 310102000021 is 120000201013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 310102000021 - 211 = 310101997973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 310101999971 and 310102000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310102000027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14095545445 + ... + 14095545466.

It is an arithmetic number, because the mean of its divisors is an integer number (84573272736).

Almost surely, 2310102000021 is an apocalyptic number.

It is an amenable number.

310102000021 is a deficient number, since it is larger than the sum of its proper divisors (28191090923).

310102000021 is a wasteful number, since it uses less digits than its factorization.

310102000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28191090922.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 310102000021 its reverse (120000201013), we get a palindrome (430102201034).

The spelling of 310102000021 in words is "three hundred ten billion, one hundred two million, twenty-one", and thus it is an aban number.

Divisors: 1 11 28191090911 310102000021