861332312 has 16 divisors (see below), whose sum is σ = 1652556840. Its totient is φ = 420650496.

The previous prime is 861332281. The next prime is 861332333. The reversal of 861332312 is 213233168.

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, 1251593 + ... + 1252280.

Almost surely, 2^861332312 is an apocalyptic number.

It is an amenable number.

861332312 is a deficient number, since it is larger than the sum of its proper divisors (791224528).

861332312 is a wasteful number, since it uses less digits than its factorization.

861332312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503922 (or 2503918 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 861332312 is about 29348.4635372961. The cubic root of 861332312 is about 951.4593680848.

The spelling of 861332312 in words is "eight hundred sixty-one million, three hundred thirty-two thousand, three hundred twelve".