231151113 has 12 divisors (see below), whose sum is σ = 335752560. Its totient is φ = 153238776.

The previous prime is 231151111. The next prime is 231151117. The reversal of 231151113 is 311151132.

It is not a de Polignac number, because 231151113 - 2¹ = 231151111 is a prime.

It is a super-2 number, since 2×231151113² = 106861674082277538, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231151111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70131 + ... + 73352.

It is an arithmetic number, because the mean of its divisors is an integer number (27979380).

Almost surely, 2^231151113 is an apocalyptic number.

It is an amenable number.

231151113 is a deficient number, since it is larger than the sum of its proper divisors (104601447).

231151113 is a wasteful number, since it uses less digits than its factorization.

231151113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143668 (or 143665 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 231151113 is about 15203.6545935509. The cubic root of 231151113 is about 613.7130096076.

The spelling of 231151113 in words is "two hundred thirty-one million, one hundred fifty-one thousand, one hundred thirteen".