23831641 has 2 divisors, whose sum is σ = 23831642. Its totient is φ = 23831640.

The previous prime is 23831623. The next prime is 23831683. The reversal of 23831641 is 14613832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12809241 + 11022400 = 3579^2 + 3320^2 .

It is a cyclic number.

It is not a de Polignac number, because 23831641 - 2¹¹ = 23829593 is a prime.

It is a super-2 number, since 2×23831641² = 1135894225505762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23801641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11915820 + 11915821.

It is an arithmetic number, because the mean of its divisors is an integer number (11915821).

Almost surely, 2^23831641 is an apocalyptic number.

23831641 is the 3088-th centered pentagonal number.

It is an amenable number.

23831641 is a deficient number, since it is larger than the sum of its proper divisors (1).

23831641 is an equidigital number, since it uses as much as digits as its factorization.

23831641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 23831641 is about 4881.7661762932. The cubic root of 23831641 is about 287.7738426747.

The spelling of 23831641 in words is "twenty-three million, eight hundred thirty-one thousand, six hundred forty-one".