231133132 has 12 divisors (see below), whose sum is σ = 418430880. Its totient is φ = 111581456.

The previous prime is 231133109. The next prime is 231133153. The reversal of 231133132 is 231331132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996148 + ... + 996379.

It is an arithmetic number, because the mean of its divisors is an integer number (34869240).

Almost surely, 2^231133132 is an apocalyptic number.

It is an amenable number.

231133132 is a deficient number, since it is larger than the sum of its proper divisors (187297748).

231133132 is a wasteful number, since it uses less digits than its factorization.

231133132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992560 (or 1992558 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 231133132 is about 15203.0632439650. The cubic root of 231133132 is about 613.6970958335.

Adding to 231133132 its reverse (231331132), we get a palindrome (462464264).

The spelling of 231133132 in words is "two hundred thirty-one million, one hundred thirty-three thousand, one hundred thirty-two".