23887631 has 4 divisors (see below), whose sum is σ = 23902032. Its totient is φ = 23873232.

The previous prime is 23887627. The next prime is 23887651. The reversal of 23887631 is 13678832.

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 23887631 - 2² = 23887627 is a prime.

It is a super-2 number, since 2×23887631² = 1141237829584322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23887621) 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, 4331 + ... + 8156.

It is an arithmetic number, because the mean of its divisors is an integer number (5975508).

Almost surely, 2^23887631 is an apocalyptic number.

23887631 is a deficient number, since it is larger than the sum of its proper divisors (14401).

23887631 is a wasteful number, since it uses less digits than its factorization.

23887631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14400.

The product of its digits is 48384, while the sum is 38.

The square root of 23887631 is about 4887.4974168791. The cubic root of 23887631 is about 287.9990314718. Note that the first 3 decimals are identical.

The spelling of 23887631 in words is "twenty-three million, eight hundred eighty-seven thousand, six hundred thirty-one".