23401312961 has 4 divisors (see below), whose sum is σ = 25201413972. Its totient is φ = 21601211952.

The previous prime is 23401312903. The next prime is 23401312973. The reversal of 23401312961 is 16921310432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11673505936 + 11727807025 = 108044^2 + 108295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23401312961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23401312061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900050486 + ... + 900050511.

It is an arithmetic number, because the mean of its divisors is an integer number (6300353493).

Almost surely, 2^23401312961 is an apocalyptic number.

It is an amenable number.

23401312961 is a deficient number, since it is larger than the sum of its proper divisors (1800101011).

23401312961 is a wasteful number, since it uses less digits than its factorization.

23401312961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800101010.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 23401312961 in words is "twenty-three billion, four hundred one million, three hundred twelve thousand, nine hundred sixty-one".