231131119 has 4 divisors (see below), whose sum is σ = 237377944. Its totient is φ = 224884296.

The previous prime is 231131111. The next prime is 231131123. The reversal of 231131119 is 911131132.

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

It is a cyclic number.

It is not a de Polignac number, because 231131119 - 2³ = 231131111 is a prime.

It is a super-2 number, since 2×231131119² = 106843188340384322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231131119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231131111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3123357 + ... + 3123430.

It is an arithmetic number, because the mean of its divisors is an integer number (59344486).

Almost surely, 2^231131119 is an apocalyptic number.

231131119 is a deficient number, since it is larger than the sum of its proper divisors (6246825).

231131119 is an equidigital number, since it uses as much as digits as its factorization.

231131119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6246824.

The product of its digits is 162, while the sum is 22.

The square root of 231131119 is about 15202.9970400576. The cubic root of 231131119 is about 613.6953142112.

The spelling of 231131119 in words is "two hundred thirty-one million, one hundred thirty-one thousand, one hundred nineteen".