31100131020113 has 4 divisors (see below), whose sum is σ = 31163471409648. Its totient is φ = 31036790630580.

The previous prime is 31100131020019. The next prime is 31100131020149. The reversal of 31100131020113 is 31102013100113.

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 31100131020113 - 2²⁶ = 31100063911249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31100131020091 and 31100131020100.

It is not an unprimeable number, because it can be changed into a prime (31100131020163) 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, 31670194031 + ... + 31670195012.

It is an arithmetic number, because the mean of its divisors is an integer number (7790867852412).

Almost surely, 2^{31100131020113} is an apocalyptic number.

It is an amenable number.

31100131020113 is a deficient number, since it is larger than the sum of its proper divisors (63340389535).

31100131020113 is an equidigital number, since it uses as much as digits as its factorization.

31100131020113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63340389534.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 31100131020113 its reverse (31102013100113), we get a palindrome (62202144120226).

The spelling of 31100131020113 in words is "thirty-one trillion, one hundred billion, one hundred thirty-one million, twenty thousand, one hundred thirteen".