231130142 has 16 divisors (see below), whose sum is σ = 352896000. Its totient is φ = 113513400.

The previous prime is 231130139. The next prime is 231130177. The reversal of 231130142 is 241031132.

231130142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231130142² = 106842285081880328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231130142.

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, 27767 + ... + 35117.

It is an arithmetic number, because the mean of its divisors is an integer number (22056000).

Almost surely, 2^231130142 is an apocalyptic number.

231130142 is a deficient number, since it is larger than the sum of its proper divisors (121765858).

231130142 is a wasteful number, since it uses less digits than its factorization.

231130142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231130142 is about 15202.9649082013. The cubic root of 231130142 is about 613.6944495055.

Adding to 231130142 its reverse (241031132), we get a palindrome (472161274).

The spelling of 231130142 in words is "two hundred thirty-one million, one hundred thirty thousand, one hundred forty-two".