23116537 has 2 divisors, whose sum is σ = 23116538. Its totient is φ = 23116536.

The previous prime is 23116529. The next prime is 23116543. The reversal of 23116537 is 73561132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 114921 = 4796^2 + 339^2 .

It is a cyclic number.

It is not a de Polignac number, because 23116537 - 2³ = 23116529 is a prime.

It is not a weakly prime, because it can be changed into another prime (23116507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11558268 + 11558269.

It is an arithmetic number, because the mean of its divisors is an integer number (11558269).

Almost surely, 2^23116537 is an apocalyptic number.

It is an amenable number.

23116537 is a deficient number, since it is larger than the sum of its proper divisors (1).

23116537 is an equidigital number, since it uses as much as digits as its factorization.

23116537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 23116537 is about 4807.9659940561. The cubic root of 23116537 is about 284.8662016875.

Adding to 23116537 its reverse (73561132), we get a palindrome (96677669).

It can be divided in two parts, 23116 and 537, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 23116537 in words is "twenty-three million, one hundred sixteen thousand, five hundred thirty-seven".