31133100113031 has 16 divisors (see below), whose sum is σ = 47512685907968. Its totient is φ = 17763428628000.

The previous prime is 31133100112973. The next prime is 31133100113083. The reversal of 31133100113031 is 13031100133113.

It is not a de Polignac number, because 31133100113031 - 2²⁷ = 31132965895303 is a prime.

It is a super-2 number, since 2×31133100113031² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31133100112989 and 31133100113007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133100113431) 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, 1121414695 + ... + 1121442456.

It is an arithmetic number, because the mean of its divisors is an integer number (2969542869248).

Almost surely, 2^{31133100113031} is an apocalyptic number.

31133100113031 is a deficient number, since it is larger than the sum of its proper divisors (16379585794937).

31133100113031 is a wasteful number, since it uses less digits than its factorization.

31133100113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242857822.

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

Adding to 31133100113031 its reverse (13031100133113), we get a palindrome (44164200246144).

The spelling of 31133100113031 in words is "thirty-one trillion, one hundred thirty-three billion, one hundred million, one hundred thirteen thousand, thirty-one".