23201951 has 4 divisors (see below), whose sum is σ = 23407392. Its totient is φ = 22996512.

The previous prime is 23201947. The next prime is 23201953. The reversal of 23201951 is 15910232.

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

It is a cyclic number.

It is not a de Polignac number, because 23201951 - 2² = 23201947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23201953) 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, 102551 + ... + 102776.

It is an arithmetic number, because the mean of its divisors is an integer number (5851848).

Almost surely, 2^23201951 is an apocalyptic number.

23201951 is a deficient number, since it is larger than the sum of its proper divisors (205441).

23201951 is a wasteful number, since it uses less digits than its factorization.

23201951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205440.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 23201951 is about 4816.8403544232. The cubic root of 23201951 is about 285.2166240612.

The spelling of 23201951 in words is "twenty-three million, two hundred one thousand, nine hundred fifty-one".