23878931 has 4 divisors (see below), whose sum is σ = 25283592. Its totient is φ = 22474272.

The previous prime is 23878913. The next prime is 23878973. The reversal of 23878931 is 13987832.

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

It is not a de Polignac number, because 23878931 - 2¹⁰ = 23877907 is a prime.

It is a super-2 number, since 2×23878931² = 1140406691405522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23874931) 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, 702305 + ... + 702338.

It is an arithmetic number, because the mean of its divisors is an integer number (6320898).

Almost surely, 2^23878931 is an apocalyptic number.

23878931 is a deficient number, since it is larger than the sum of its proper divisors (1404661).

23878931 is a wasteful number, since it uses less digits than its factorization.

23878931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404660.

The product of its digits is 72576, while the sum is 41.

The square root of 23878931 is about 4886.6073097805. The cubic root of 23878931 is about 287.9640636424.

The spelling of 23878931 in words is "twenty-three million, eight hundred seventy-eight thousand, nine hundred thirty-one".