231123986 has 16 divisors (see below), whose sum is σ = 351999648. Its totient is φ = 113796000.

The previous prime is 231123983. The next prime is 231123989. The reversal of 231123986 is 689321132.

It is an interprime number because it is at equal distance from previous prime (231123983) and next prime (231123989).

It is not an unprimeable number, because it can be changed into a prime (231123983) 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 7 ways as a sum of consecutive naturals, for example, 158561 + ... + 160011.

It is an arithmetic number, because the mean of its divisors is an integer number (21999978).

Almost surely, 2^231123986 is an apocalyptic number.

231123986 is a deficient number, since it is larger than the sum of its proper divisors (120875662).

231123986 is a wasteful number, since it uses less digits than its factorization.

231123986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617.

The product of its digits is 15552, while the sum is 35.

The square root of 231123986 is about 15202.7624463451. The cubic root of 231123986 is about 613.6890010072.

The spelling of 231123986 in words is "two hundred thirty-one million, one hundred twenty-three thousand, nine hundred eighty-six".