231121132 has 18 divisors (see below), whose sum is σ = 444574844. Its totient is φ = 105054840.

The previous prime is 231121109. The next prime is 231121133.

231121132 is nontrivially palindromic in base 10.

231121132 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 2×231121132² = 106833955313922848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231121133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238278 + ... + 239245.

Almost surely, 2^231121132 is an apocalyptic number.

231121132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231121132 is a deficient number, since it is larger than the sum of its proper divisors (213453712).

231121132 is a wasteful number, since it uses less digits than its factorization.

231121132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477549 (or 477536 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 231121132 is about 15202.6685815353. The cubic root of 231121132 is about 613.6864749812.

The spelling of 231121132 in words is "two hundred thirty-one million, one hundred twenty-one thousand, one hundred thirty-two".