231442132 has 12 divisors (see below), whose sum is σ = 411888960. Its totient is φ = 113759576.

The previous prime is 231442109. The next prime is 231442213. The reversal of 231442132 is 231244132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490108 + ... + 490579.

It is an arithmetic number, because the mean of its divisors is an integer number (34324080).

Almost surely, 2^231442132 is an apocalyptic number.

It is an amenable number.

231442132 is a deficient number, since it is larger than the sum of its proper divisors (180446828).

231442132 is a wasteful number, since it uses less digits than its factorization.

231442132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980750 (or 980748 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 231442132 is about 15213.2222753761. Note that the first 4 decimals coincide. The cubic root of 231442132 is about 613.9704562668.

Adding to 231442132 its reverse (231244132), we get a palindrome (462686264).

The spelling of 231442132 in words is "two hundred thirty-one million, four hundred forty-two thousand, one hundred thirty-two".