23431938 has 8 divisors (see below), whose sum is σ = 46863888. Its totient is φ = 7810644.

The previous prime is 23431931. The next prime is 23431943. The reversal of 23431938 is 83913432.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

23431938 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 23431899 and 23431908.

It is not an unprimeable number, because it can be changed into a prime (23431931) 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, 1952656 + ... + 1952667.

It is an arithmetic number, because the mean of its divisors is an integer number (5857986).

Almost surely, 2^23431938 is an apocalyptic number.

23431938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23431938 is a wasteful number, since it uses less digits than its factorization.

23431938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3905328.

The product of its digits is 15552, while the sum is 33.

The square root of 23431938 is about 4840.6547077849. The cubic root of 23431938 is about 286.1559209785.

The spelling of 23431938 in words is "twenty-three million, four hundred thirty-one thousand, nine hundred thirty-eight".