231241142 has 16 divisors (see below), whose sum is σ = 380588112. Its totient is φ = 104500320.

The previous prime is 231241139. The next prime is 231241159. The reversal of 231241142 is 241142132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26573 + ... + 34184.

It is an arithmetic number, because the mean of its divisors is an integer number (23786757).

Almost surely, 2^231241142 is an apocalyptic number.

231241142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231241142 is a deficient number, since it is larger than the sum of its proper divisors (149346970).

231241142 is a wasteful number, since it uses less digits than its factorization.

231241142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60943.

The product of its digits is 384, while the sum is 20.

The square root of 231241142 is about 15206.6150737105. The cubic root of 231241142 is about 613.7926758141.

Adding to 231241142 its reverse (241142132), we get a palindrome (472383274).

The spelling of 231241142 in words is "two hundred thirty-one million, two hundred forty-one thousand, one hundred forty-two".