23431271135 has 4 divisors (see below), whose sum is σ = 28117525368. Its totient is φ = 18745016904.

The previous prime is 23431271117. The next prime is 23431271153. The reversal of 23431271135 is 53117213432.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23431271117) and next prime (23431271153).

It is a cyclic number.

It is not a de Polignac number, because 23431271135 - 2²⁴ = 23414493919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2343127109 + ... + 2343127118.

It is an arithmetic number, because the mean of its divisors is an integer number (7029381342).

Almost surely, 2^23431271135 is an apocalyptic number.

23431271135 is a deficient number, since it is larger than the sum of its proper divisors (4686254233).

23431271135 is an equidigital number, since it uses as much as digits as its factorization.

23431271135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686254232.

The product of its digits is 15120, while the sum is 32.

Adding to 23431271135 its reverse (53117213432), we get a palindrome (76548484567).

The spelling of 23431271135 in words is "twenty-three billion, four hundred thirty-one million, two hundred seventy-one thousand, one hundred thirty-five".