23471531 has 2 divisors, whose sum is σ = 23471532. Its totient is φ = 23471530.

The previous prime is 23471501. The next prime is 23471549. The reversal of 23471531 is 13517432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23471531 - 2⁶ = 23471467 is a prime.

It is a super-2 number, since 2×23471531² = 1101825534967922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23471531.

It is not a weakly prime, because it can be changed into another prime (23471501) 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, 11735765 + 11735766.

It is an arithmetic number, because the mean of its divisors is an integer number (11735766).

Almost surely, 2^23471531 is an apocalyptic number.

23471531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23471531 is an equidigital number, since it uses as much as digits as its factorization.

23471531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 23471531 is about 4844.7426144224. The cubic root of 23471531 is about 286.3170030601.

Adding to 23471531 its reverse (13517432), we get a palindrome (36988963).

The spelling of 23471531 in words is "twenty-three million, four hundred seventy-one thousand, five hundred thirty-one".