23140136 has 16 divisors (see below), whose sum is σ = 44787840. Its totient is φ = 11196720.

The previous prime is 23140123. The next prime is 23140163. The reversal of 23140136 is 63104132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46406 + ... + 46901.

It is an arithmetic number, because the mean of its divisors is an integer number (2799240).

Almost surely, 2^23140136 is an apocalyptic number.

It is an amenable number.

23140136 is a deficient number, since it is larger than the sum of its proper divisors (21647704).

23140136 is a wasteful number, since it uses less digits than its factorization.

23140136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93344 (or 93340 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 23140136 is about 4810.4195243243. The cubic root of 23140136 is about 284.9631059249.

Adding to 23140136 its reverse (63104132), we get a palindrome (86244268).

The spelling of 23140136 in words is "twenty-three million, one hundred forty thousand, one hundred thirty-six".