31113103013031 has 32 divisors (see below), whose sum is σ = 46216836610560. Its totient is φ = 18485865224064.

The previous prime is 31113103012987. The next prime is 31113103013039. The reversal of 31113103013031 is 13031030131113.

It is not a de Polignac number, because 31113103013031 - 2⁷ = 31113103012903 is a prime.

It is a super-2 number, since 2×31113103013031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31113103012989 and 31113103013007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113103013039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51457390 + ... + 52058516.

It is an arithmetic number, because the mean of its divisors is an integer number (1444276144080).

Almost surely, 2^{31113103013031} is an apocalyptic number.

31113103013031 is a deficient number, since it is larger than the sum of its proper divisors (15103733597529).

31113103013031 is a wasteful number, since it uses less digits than its factorization.

31113103013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646935.

The product of its (nonzero) digits is 243, while the sum is 21.

Adding to 31113103013031 its reverse (13031030131113), we get a palindrome (44144133144144).

The spelling of 31113103013031 in words is "thirty-one trillion, one hundred thirteen billion, one hundred three million, thirteen thousand, thirty-one".