23290961 has 4 divisors (see below), whose sum is σ = 23531172. Its totient is φ = 23050752.

The previous prime is 23290957. The next prime is 23290999. The reversal of 23290961 is 16909232.

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 14025025 + 9265936 = 3745^2 + 3044^2 .

It is a cyclic number.

It is not a de Polignac number, because 23290961 - 2² = 23290957 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23290061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119960 + ... + 120153.

It is an arithmetic number, because the mean of its divisors is an integer number (5882793).

Almost surely, 2^23290961 is an apocalyptic number.

It is an amenable number.

23290961 is a deficient number, since it is larger than the sum of its proper divisors (240211).

23290961 is an equidigital number, since it uses as much as digits as its factorization.

23290961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240210.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 23290961 is about 4826.0709692254. The cubic root of 23290961 is about 285.5808856180.

The spelling of 23290961 in words is "twenty-three million, two hundred ninety thousand, nine hundred sixty-one".