23136993 has 24 divisors (see below), whose sum is σ = 36828480. Its totient is φ = 13880160.

The previous prime is 23136977. The next prime is 23137001. The reversal of 23136993 is 39963132.

It is a happy number.

It is not a de Polignac number, because 23136993 - 2⁴ = 23136977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23136913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9063 + ... + 11331.

It is an arithmetic number, because the mean of its divisors is an integer number (1534520).

Almost surely, 2^23136993 is an apocalyptic number.

It is an amenable number.

23136993 is a deficient number, since it is larger than the sum of its proper divisors (13691487).

23136993 is a wasteful number, since it uses less digits than its factorization.

23136993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389 (or 2386 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 23136993 is about 4810.0928265471. The cubic root of 23136993 is about 284.9502036729.

The spelling of 23136993 in words is "twenty-three million, one hundred thirty-six thousand, nine hundred ninety-three".