23231121313 has 2 divisors, whose sum is σ = 23231121314. Its totient is φ = 23231121312.

The previous prime is 23231121293. The next prime is 23231121317. The reversal of 23231121313 is 31312113232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11625799329 + 11605321984 = 107823^2 + 107728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23231121313 is a prime.

It is not a weakly prime, because it can be changed into another prime (23231121317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11615560656 + 11615560657.

It is an arithmetic number, because the mean of its divisors is an integer number (11615560657).

Almost surely, 2^23231121313 is an apocalyptic number.

It is an amenable number.

23231121313 is a deficient number, since it is larger than the sum of its proper divisors (1).

23231121313 is an equidigital number, since it uses as much as digits as its factorization.

23231121313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

Adding to 23231121313 its reverse (31312113232), we get a palindrome (54543234545).

The spelling of 23231121313 in words is "twenty-three billion, two hundred thirty-one million, one hundred twenty-one thousand, three hundred thirteen".