23431253 has 6 divisors (see below), whose sum is σ = 24890946. Its totient is φ = 22052672.

The previous prime is 23431241. The next prime is 23431267. The reversal of 23431253 is 35213432.

It can be written as a sum of positive squares in 3 ways, for example, as 14799409 + 8631844 = 3847^2 + 2938^2 .

It is not a de Polignac number, because 23431253 - 2⁶ = 23431189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40250 + ... + 40827.

It is an arithmetic number, because the mean of its divisors is an integer number (4148491).

Almost surely, 2^23431253 is an apocalyptic number.

It is an amenable number.

23431253 is a deficient number, since it is larger than the sum of its proper divisors (1459693).

23431253 is an equidigital number, since it uses as much as digits as its factorization.

23431253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81111 (or 81094 counting only the distinct ones).

The product of its digits is 2160, while the sum is 23.

The square root of 23431253 is about 4840.5839523760. The cubic root of 23431253 is about 286.1531324950.

Adding to 23431253 its reverse (35213432), we get a palindrome (58644685).

It can be divided in two parts, 2343125 and 3, that multiplied together give a triangular number (7029375 = T₃₇₄₉).

The spelling of 23431253 in words is "twenty-three million, four hundred thirty-one thousand, two hundred fifty-three".