23487831 has 12 divisors (see below), whose sum is σ = 33969000. Its totient is φ = 15639120.

The previous prime is 23487809. The next prime is 23487869. The reversal of 23487831 is 13878432.

It is not a de Polignac number, because 23487831 - 2⁷ = 23487703 is a prime.

It is a super-2 number, since 2×23487831² = 1103356410169122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23487131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12621 + ... + 14361.

It is an arithmetic number, because the mean of its divisors is an integer number (2830750).

Almost surely, 2^23487831 is an apocalyptic number.

23487831 is a deficient number, since it is larger than the sum of its proper divisors (10481169).

23487831 is a wasteful number, since it uses less digits than its factorization.

23487831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246 (or 3243 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 23487831 is about 4846.4245583729. The cubic root of 23487831 is about 286.3832661319.

The spelling of 23487831 in words is "twenty-three million, four hundred eighty-seven thousand, eight hundred thirty-one".