31311323210101 has 48 divisors (see below), whose sum is σ = 36513879321600. Its totient is φ = 26619985735200.

The previous prime is 31311323210047. The next prime is 31311323210119. The reversal of 31311323210101 is 10101232311313.

It is not a de Polignac number, because 31311323210101 - 2⁷ = 31311323209973 is a prime.

It is a super-2 number, since 2×31311323210101² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311323211101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2851923030 + ... + 2851934008.

It is an arithmetic number, because the mean of its divisors is an integer number (760705819200).

Almost surely, 2^{31311323210101} is an apocalyptic number.

It is an amenable number.

31311323210101 is a deficient number, since it is larger than the sum of its proper divisors (5202556111499).

31311323210101 is a wasteful number, since it uses less digits than its factorization.

31311323210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20198 (or 20179 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31311323210101 its reverse (10101232311313), we get a palindrome (41412555521414).

The spelling of 31311323210101 in words is "thirty-one trillion, three hundred eleven billion, three hundred twenty-three million, two hundred ten thousand, one hundred one".