2131401232 has 10 divisors (see below), whose sum is σ = 4129589918. Its totient is φ = 1065700608.

The previous prime is 2131401227. The next prime is 2131401257. The reversal of 2131401232 is 2321041312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2092513536 + 38887696 = 45744^2 + 6236^2 .

It is a super-2 number, since 2×2131401232² = 9085742423542235648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66606273 + ... + 66606304.

Almost surely, 2^2131401232 is an apocalyptic number.

It is an amenable number.

2131401232 is a deficient number, since it is larger than the sum of its proper divisors (1998188686).

2131401232 is a wasteful number, since it uses less digits than its factorization.

2131401232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133212585 (or 133212579 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2131401232 is about 46167.1011868842. The cubic root of 2131401232 is about 1286.9304322315.

Adding to 2131401232 its reverse (2321041312), we get a palindrome (4452442544).

The spelling of 2131401232 in words is "two billion, one hundred thirty-one million, four hundred one thousand, two hundred thirty-two".