23131343113031 has 16 divisors (see below), whose sum is σ = 25382881859040. Its totient is φ = 20981534945280.

The previous prime is 23131343113027. The next prime is 23131343113163. The reversal of 23131343113031 is 13031134313132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23131343113031 - 2² = 23131343113027 is a prime.

It is a super-2 number, since 2×23131343113031² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23131343112985 and 23131343113003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131343113331) 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, 42618410 + ... + 43157751.

It is an arithmetic number, because the mean of its divisors is an integer number (1586430116190).

Almost surely, 2^{23131343113031} is an apocalyptic number.

23131343113031 is a deficient number, since it is larger than the sum of its proper divisors (2251538746009).

23131343113031 is a wasteful number, since it uses less digits than its factorization.

23131343113031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85776754.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 23131343113031 its reverse (13031134313132), we get a palindrome (36162477426163).

The spelling of 23131343113031 in words is "twenty-three trillion, one hundred thirty-one billion, three hundred forty-three million, one hundred thirteen thousand, thirty-one".