23901961 has 4 divisors (see below), whose sum is σ = 24673024. Its totient is φ = 23130900.

The previous prime is 23901959. The next prime is 23901971. The reversal of 23901961 is 16910932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23901961 - 2¹ = 23901959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 771031 = 23901961 / (2 + 3 + 9 + 0 + 1 + 9 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (23901901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385485 + ... + 385546.

It is an arithmetic number, because the mean of its divisors is an integer number (6168256).

Almost surely, 2^23901961 is an apocalyptic number.

It is an amenable number.

23901961 is a deficient number, since it is larger than the sum of its proper divisors (771063).

23901961 is an equidigital number, since it uses as much as digits as its factorization.

23901961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771062.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 23901961 is about 4888.9631825163. The cubic root of 23901961 is about 288.0566094032.

The spelling of 23901961 in words is "twenty-three million, nine hundred one thousand, nine hundred sixty-one".