231383142 has 28 divisors (see below), whose sum is σ = 520377300. Its totient is φ = 77127228.

The previous prime is 231383123. The next prime is 231383149. The reversal of 231383142 is 241383132.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231383149) 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 13 ways as a sum of consecutive naturals, for example, 77892 + ... + 80807.

Almost surely, 2^231383142 is an apocalyptic number.

231383142 is an abundant number, since it is smaller than the sum of its proper divisors (288994158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231383142 is an equidigital number, since it uses as much as digits as its factorization.

231383142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158719 (or 158704 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 231383142 is about 15211.2833778087. The cubic root of 231383142 is about 613.9182888784.

The spelling of 231383142 in words is "two hundred thirty-one million, three hundred eighty-three thousand, one hundred forty-two".