23191357961 has 8 divisors (see below), whose sum is σ = 23337165600. Its totient is φ = 23045731200.

The previous prime is 23191357927. The next prime is 23191358033. The reversal of 23191357961 is 16975319132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23191357961 - 2⁶ = 23191357897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23191357921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216761 + ... + 305561.

It is an arithmetic number, because the mean of its divisors is an integer number (2917145700).

Almost surely, 2^23191357961 is an apocalyptic number.

It is an amenable number.

23191357961 is a deficient number, since it is larger than the sum of its proper divisors (145807639).

23191357961 is a wasteful number, since it uses less digits than its factorization.

23191357961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90439.

The product of its digits is 306180, while the sum is 47.

The spelling of 23191357961 in words is "twenty-three billion, one hundred ninety-one million, three hundred fifty-seven thousand, nine hundred sixty-one".