231113533 has 8 divisors (see below), whose sum is σ = 264264320. Its totient is φ = 197996400.

The previous prime is 231113527. The next prime is 231113537. The reversal of 231113533 is 335311132.

It is a happy number.

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

It is not a de Polignac number, because 231113533 - 2⁵ = 231113501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231113537) 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, 8608 + ... + 23158.

It is an arithmetic number, because the mean of its divisors is an integer number (33033040).

Almost surely, 2^231113533 is an apocalyptic number.

It is an amenable number.

231113533 is a deficient number, since it is larger than the sum of its proper divisors (33150787).

231113533 is a wasteful number, since it uses less digits than its factorization.

231113533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16827.

The product of its digits is 810, while the sum is 22.

The square root of 231113533 is about 15202.4186562534. The cubic root of 231113533 is about 613.6797491363.

Adding to 231113533 its reverse (335311132), we get a palindrome (566424665).

The spelling of 231113533 in words is "two hundred thirty-one million, one hundred thirteen thousand, five hundred thirty-three".