23531929 has 2 divisors, whose sum is σ = 23531930. Its totient is φ = 23531928.

The previous prime is 23531917. The next prime is 23531933. The reversal of 23531929 is 92913532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17867529 + 5664400 = 4227^2 + 2380^2 .

It is a cyclic number.

It is not a de Polignac number, because 23531929 - 2²³ = 15143321 is a prime.

It is a super-2 number, since 2×23531929² = 1107503364922082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23531894 and 23531903.

It is not a weakly prime, because it can be changed into another prime (23531939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11765964 + 11765965.

It is an arithmetic number, because the mean of its divisors is an integer number (11765965).

Almost surely, 2^23531929 is an apocalyptic number.

It is an amenable number.

23531929 is a deficient number, since it is larger than the sum of its proper divisors (1).

23531929 is an equidigital number, since it uses as much as digits as its factorization.

23531929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 34.

The square root of 23531929 is about 4850.9719644624. The cubic root of 23531929 is about 286.5623806412.

The spelling of 23531929 in words is "twenty-three million, five hundred thirty-one thousand, nine hundred twenty-nine".