23311313321 has 2 divisors, whose sum is σ = 23311313322. Its totient is φ = 23311313320.

The previous prime is 23311313309. The next prime is 23311313327. The reversal of 23311313321 is 12331311332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16712025625 + 6599287696 = 129275^2 + 81236^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311313321 - 2¹⁸ = 23311051177 is a prime.

It is not a weakly prime, because it can be changed into another prime (23311313327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655656660 + 11655656661.

It is an arithmetic number, because the mean of its divisors is an integer number (11655656661).

Almost surely, 2^23311313321 is an apocalyptic number.

It is an amenable number.

23311313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311313321 is an equidigital number, since it uses as much as digits as its factorization.

23311313321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 23.

Adding to 23311313321 its reverse (12331311332), we get a palindrome (35642624653).

The spelling of 23311313321 in words is "twenty-three billion, three hundred eleven million, three hundred thirteen thousand, three hundred twenty-one".