23135431 has 8 divisors (see below), whose sum is σ = 25288704. Its totient is φ = 20990520.

The previous prime is 23135389. The next prime is 23135443. The reversal of 23135431 is 13453132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23135431 - 2⁷ = 23135303 is a prime.

It is a super-2 number, since 2×23135431² = 1070496335111522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23135131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4666 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (3161088).

Almost surely, 2^23135431 is an apocalyptic number.

23135431 is a deficient number, since it is larger than the sum of its proper divisors (2153273).

23135431 is a wasteful number, since it uses less digits than its factorization.

23135431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181.

The product of its digits is 1080, while the sum is 22.

The square root of 23135431 is about 4809.9304568777. The cubic root of 23135431 is about 284.9437911105.

Adding to 23135431 its reverse (13453132), we get a palindrome (36588563).

It can be divided in two parts, 2313 and 5431, that added together give a square (7744 = 88²).

The spelling of 23135431 in words is "twenty-three million, one hundred thirty-five thousand, four hundred thirty-one".