23455431 has 12 divisors (see below), whose sum is σ = 34109400. Its totient is φ = 15531120.

The previous prime is 23455429. The next prime is 23455441. The reversal of 23455431 is 13455432.

It is not a de Polignac number, because 23455431 - 2¹ = 23455429 is a prime.

It is a super-2 number, since 2×23455431² = 1100314486791522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23455395 and 23455404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23455441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7405 + ... + 10086.

It is an arithmetic number, because the mean of its divisors is an integer number (2842450).

Almost surely, 2^23455431 is an apocalyptic number.

23455431 is a deficient number, since it is larger than the sum of its proper divisors (10653969).

23455431 is a wasteful number, since it uses less digits than its factorization.

23455431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17646 (or 17643 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 23455431 is about 4843.0807344086. The cubic root of 23455431 is about 286.2515229097.

Subtracting from 23455431 its reverse (13455432), we obtain a palindrome (9999999).

It can be divided in two parts, 2345 and 5431, that added together give a 5-th power (7776 = 6⁵).

The spelling of 23455431 in words is "twenty-three million, four hundred fifty-five thousand, four hundred thirty-one".