23131413131 has 4 divisors (see below), whose sum is σ = 23134941000. Its totient is φ = 23127885264.

The previous prime is 23131413119. The next prime is 23131413133. The reversal of 23131413131 is 13131413132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23131413131 is a prime.

It is a super-2 number, since 2×23131413131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23131413097 and 23131413106.

It is not an unprimeable number, because it can be changed into a prime (23131413133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754081 + ... + 1767218.

It is an arithmetic number, because the mean of its divisors is an integer number (5783735250).

Almost surely, 2^23131413131 is an apocalyptic number.

23131413131 is a deficient number, since it is larger than the sum of its proper divisors (3527869).

23131413131 is an equidigital number, since it uses as much as digits as its factorization.

23131413131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527868.

The product of its digits is 648, while the sum is 23.

Adding to 23131413131 its reverse (13131413132), we get a palindrome (36262826263).

Subtracting from 23131413131 its reverse (13131413132), we obtain a palindrome (9999999999).

The spelling of 23131413131 in words is "twenty-three billion, one hundred thirty-one million, four hundred thirteen thousand, one hundred thirty-one".