23131001313231 has 64 divisors (see below), whose sum is σ = 38468398694400. Its totient is φ = 12062956703616.

The previous prime is 23131001313229. The next prime is 23131001313253. The reversal of 23131001313231 is 13231310013132.

It is not a de Polignac number, because 23131001313231 - 2¹ = 23131001313229 is a prime.

It is a super-2 number, since 2×23131001313231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131001313331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2869690 + ... + 7382216.

It is an arithmetic number, because the mean of its divisors is an integer number (601068729600).

Almost surely, 2^{23131001313231} is an apocalyptic number.

23131001313231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23131001313231 is a deficient number, since it is larger than the sum of its proper divisors (15337397381169).

23131001313231 is a wasteful number, since it uses less digits than its factorization.

23131001313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513028.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 23131001313231 its reverse (13231310013132), we get a palindrome (36362311326363).

The spelling of 23131001313231 in words is "twenty-three trillion, one hundred thirty-one billion, one million, three hundred thirteen thousand, two hundred thirty-one".