23131321253 has 2 divisors, whose sum is σ = 23131321254. Its totient is φ = 23131321252.

The previous prime is 23131321217. The next prime is 23131321351. The reversal of 23131321253 is 35212313132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15779630689 + 7351690564 = 125617^2 + 85742^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131321253 - 2²⁸ = 22862885797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23131321153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565660626 + 11565660627.

It is an arithmetic number, because the mean of its divisors is an integer number (11565660627).

Almost surely, 2^23131321253 is an apocalyptic number.

It is an amenable number.

23131321253 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131321253 is an equidigital number, since it uses as much as digits as its factorization.

23131321253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 26.

Adding to 23131321253 its reverse (35212313132), we get a palindrome (58343634385).

The spelling of 23131321253 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty-one thousand, two hundred fifty-three".