23772131 has 2 divisors, whose sum is σ = 23772132. Its totient is φ = 23772130.

The previous prime is 23772109. The next prime is 23772139. The reversal of 23772131 is 13127732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23772131 - 2¹⁴ = 23755747 is a prime.

It is a super-2 number, since 2×23772131² = 1130228424562322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23772131.

It is not a weakly prime, because it can be changed into another prime (23772139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11886065 + 11886066.

It is an arithmetic number, because the mean of its divisors is an integer number (11886066).

Almost surely, 2^23772131 is an apocalyptic number.

23772131 is a deficient number, since it is larger than the sum of its proper divisors (1).

23772131 is an equidigital number, since it uses as much as digits as its factorization.

23772131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 26.

The square root of 23772131 is about 4875.6672363893. The cubic root of 23772131 is about 287.5341096266.

Adding to 23772131 its reverse (13127732), we get a palindrome (36899863).

The spelling of 23772131 in words is "twenty-three million, seven hundred seventy-two thousand, one hundred thirty-one".