23137899 has 16 divisors (see below), whose sum is σ = 31756704. Its totient is φ = 14976000.

The previous prime is 23137897. The next prime is 23137903. The reversal of 23137899 is 99873132.

It is not a de Polignac number, because 23137899 - 2¹ = 23137897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23137899.

It is not an unprimeable number, because it can be changed into a prime (23137897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38199 + ... + 38799.

It is an arithmetic number, because the mean of its divisors is an integer number (1984794).

Almost surely, 2^23137899 is an apocalyptic number.

23137899 is a deficient number, since it is larger than the sum of its proper divisors (8618805).

23137899 is a wasteful number, since it uses less digits than its factorization.

23137899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958.

The product of its digits is 81648, while the sum is 42.

The square root of 23137899 is about 4810.1870026019. The cubic root of 23137899 is about 284.9539229911.

The spelling of 23137899 in words is "twenty-three million, one hundred thirty-seven thousand, eight hundred ninety-nine".