23312004 has 24 divisors (see below), whose sum is σ = 55288128. Its totient is φ = 7643040.

The previous prime is 23311991. The next prime is 23312011. The reversal of 23312004 is 40021332.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15192 + ... + 16655.

It is an arithmetic number, because the mean of its divisors is an integer number (2303672).

Almost surely, 2^23312004 is an apocalyptic number.

It is an amenable number.

23312004 is an abundant number, since it is smaller than the sum of its proper divisors (31976124).

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

23312004 is a wasteful number, since it uses less digits than its factorization.

23312004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31915 (or 31913 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23312004 is about 4828.2506148708. The cubic root of 23312004 is about 285.6668656063. Note that the first 3 decimals are identical.

Adding to 23312004 its reverse (40021332), we get a palindrome (63333336).

The spelling of 23312004 in words is "twenty-three million, three hundred twelve thousand, four".