23010031621 has 2 divisors, whose sum is σ = 23010031622. Its totient is φ = 23010031620.

The previous prime is 23010031589. The next prime is 23010031691. The reversal of 23010031621 is 12613001032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15913822500 + 7096209121 = 126150^2 + 84239^2 .

It is a cyclic number.

It is not a de Polignac number, because 23010031621 - 2⁵ = 23010031589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23010031691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11505015810 + 11505015811.

It is an arithmetic number, because the mean of its divisors is an integer number (11505015811).

Almost surely, 2^23010031621 is an apocalyptic number.

It is an amenable number.

23010031621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23010031621 is an equidigital number, since it uses as much as digits as its factorization.

23010031621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23010031621 its reverse (12613001032), we get a palindrome (35623032653).

The spelling of 23010031621 in words is "twenty-three billion, ten million, thirty-one thousand, six hundred twenty-one".