23212939 has 4 divisors (see below), whose sum is σ = 24578424. Its totient is φ = 21847456.

The previous prime is 23212919. The next prime is 23212961. The reversal of 23212939 is 93921232.

It is a happy number.

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 23212939 - 2⁵ = 23212907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23212939.

It is not an unprimeable number, because it can be changed into a prime (23212919) 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, 682717 + ... + 682750.

It is an arithmetic number, because the mean of its divisors is an integer number (6144606).

Almost surely, 2^23212939 is an apocalyptic number.

23212939 is a deficient number, since it is larger than the sum of its proper divisors (1365485).

23212939 is a wasteful number, since it uses less digits than its factorization.

23212939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365484.

The product of its digits is 5832, while the sum is 31.

The square root of 23212939 is about 4817.9808011241. The cubic root of 23212939 is about 285.2616413339.

The spelling of 23212939 in words is "twenty-three million, two hundred twelve thousand, nine hundred thirty-nine".