231161132 has 24 divisors (see below), whose sum is σ = 423451392. Its totient is φ = 110206800.

The previous prime is 231161129. The next prime is 231161191.

231161132 is nontrivially palindromic in base 10.

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, 26657 + ... + 34247.

It is an arithmetic number, because the mean of its divisors is an integer number (17643808).

Almost surely, 2^231161132 is an apocalyptic number.

It is an amenable number.

231161132 is a deficient number, since it is larger than the sum of its proper divisors (192290260).

231161132 is a wasteful number, since it uses less digits than its factorization.

231161132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949 (or 7947 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 231161132 is about 15203.9840831277. The cubic root of 231161132 is about 613.7218763928.

The spelling of 231161132 in words is "two hundred thirty-one million, one hundred sixty-one thousand, one hundred thirty-two".