311020104031 has 16 divisors (see below), whose sum is σ = 382808516608. Its totient is φ = 246072492000.

The previous prime is 311020103993. The next prime is 311020104049. The reversal of 311020104031 is 130401020113.

It is a cyclic number.

It is not a de Polignac number, because 311020104031 - 2²¹ = 311018006879 is a prime.

It is a super-2 number, since 2×311020104031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311020103996 and 311020104014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311020104431) 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, 3292306 + ... + 3385456.

It is an arithmetic number, because the mean of its divisors is an integer number (23925532288).

Almost surely, 2^311020104031 is an apocalyptic number.

311020104031 is a deficient number, since it is larger than the sum of its proper divisors (71788412577).

311020104031 is a wasteful number, since it uses less digits than its factorization.

311020104031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129862.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 311020104031 its reverse (130401020113), we get a palindrome (441421124144).

The spelling of 311020104031 in words is "three hundred eleven billion, twenty million, one hundred four thousand, thirty-one".