231513343255 has 4 divisors (see below), whose sum is σ = 277816011912. Its totient is φ = 185210674600.

The previous prime is 231513343231. The next prime is 231513343273. The reversal of 231513343255 is 552343315132.

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

It is not a de Polignac number, because 231513343255 - 2³³ = 222923408663 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, 23151334321 + ... + 23151334330.

It is an arithmetic number, because the mean of its divisors is an integer number (69454002978).

Almost surely, 2^231513343255 is an apocalyptic number.

231513343255 is a deficient number, since it is larger than the sum of its proper divisors (46302668657).

231513343255 is an equidigital number, since it uses as much as digits as its factorization.

231513343255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46302668656.

The product of its digits is 162000, while the sum is 37.

Adding to 231513343255 its reverse (552343315132), we get a palindrome (783856658387).

The spelling of 231513343255 in words is "two hundred thirty-one billion, five hundred thirteen million, three hundred forty-three thousand, two hundred fifty-five".