23137539 has 16 divisors (see below), whose sum is σ = 31389600. Its totient is φ = 15158016.

The previous prime is 23137537. The next prime is 23137547. The reversal of 23137539 is 93573132.

It is not a de Polignac number, because 23137539 - 2¹ = 23137537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23137537) 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, 56367 + ... + 56775.

It is an arithmetic number, because the mean of its divisors is an integer number (1961850).

Almost surely, 2^23137539 is an apocalyptic number.

23137539 is a deficient number, since it is larger than the sum of its proper divisors (8252061).

23137539 is a wasteful number, since it uses less digits than its factorization.

23137539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

The product of its digits is 17010, while the sum is 33.

The square root of 23137539 is about 4810.1495818737. The cubic root of 23137539 is about 284.9524451280.

The spelling of 23137539 in words is "twenty-three million, one hundred thirty-seven thousand, five hundred thirty-nine".