231115051 has 8 divisors (see below), whose sum is σ = 244872720. Its totient is φ = 217375488.

The previous prime is 231115043. The next prime is 231115057. The reversal of 231115051 is 150511132.

231115051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231115051 - 2³ = 231115043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231115057) 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, 28855 + ... + 35983.

It is an arithmetic number, because the mean of its divisors is an integer number (30609090).

Almost surely, 2^231115051 is an apocalyptic number.

231115051 is a deficient number, since it is larger than the sum of its proper divisors (13757669).

231115051 is a wasteful number, since it uses less digits than its factorization.

231115051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9053.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 231115051 is about 15202.4685824375. The cubic root of 231115051 is about 613.6810927239.

Adding to 231115051 its reverse (150511132), we get a palindrome (381626183).

The spelling of 231115051 in words is "two hundred thirty-one million, one hundred fifteen thousand, fifty-one".