231110420135 has 32 divisors (see below), whose sum is σ = 322433809920. Its totient is φ = 155736369792.

The previous prime is 231110420117. The next prime is 231110420153. The reversal of 231110420135 is 531024011132.

It is an interprime number because it is at equal distance from previous prime (231110420117) and next prime (231110420153).

It is a de Polignac number, because none of the positive numbers 2^k-231110420135 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231110420135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6563597 + ... + 6598713.

It is an arithmetic number, because the mean of its divisors is an integer number (10076056560).

Almost surely, 2^231110420135 is an apocalyptic number.

231110420135 is a deficient number, since it is larger than the sum of its proper divisors (91323389785).

231110420135 is a wasteful number, since it uses less digits than its factorization.

231110420135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38375.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 231110420135 its reverse (531024011132), we get a palindrome (762134431267).

The spelling of 231110420135 in words is "two hundred thirty-one billion, one hundred ten million, four hundred twenty thousand, one hundred thirty-five".