23031013321 has 2 divisors, whose sum is σ = 23031013322. Its totient is φ = 23031013320.

The previous prime is 23031013297. The next prime is 23031013331. The reversal of 23031013321 is 12331013032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18114198921 + 4916814400 = 134589^2 + 70120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23031013321 is a prime.

It is not a weakly prime, because it can be changed into another prime (23031013331) 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 as a sum of consecutive naturals, namely, 11515506660 + 11515506661.

It is an arithmetic number, because the mean of its divisors is an integer number (11515506661).

Almost surely, 2^23031013321 is an apocalyptic number.

It is an amenable number.

23031013321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23031013321 is an equidigital number, since it uses as much as digits as its factorization.

23031013321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23031013321 its reverse (12331013032), we get a palindrome (35362026353).

The spelling of 23031013321 in words is "twenty-three billion, thirty-one million, thirteen thousand, three hundred twenty-one".