23477431 has 2 divisors, whose sum is σ = 23477432. Its totient is φ = 23477430.

The previous prime is 23477429. The next prime is 23477437. The reversal of 23477431 is 13477432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23477431 - 2¹ = 23477429 is a prime.

It is a super-2 number, since 2×23477431² = 1102379532719522, which contains 22 as substring.

Together with 23477429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23477393 and 23477402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23477437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11738715 + 11738716.

It is an arithmetic number, because the mean of its divisors is an integer number (11738716).

Almost surely, 2^23477431 is an apocalyptic number.

23477431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23477431 is an equidigital number, since it uses as much as digits as its factorization.

23477431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 31.

The square root of 23477431 is about 4845.3514836387. The cubic root of 23477431 is about 286.3409913944.

Subtracting from 23477431 its reverse (13477432), we obtain a palindrome (9999999).

The spelling of 23477431 in words is "twenty-three million, four hundred seventy-seven thousand, four hundred thirty-one".