391316732 has 12 divisors (see below), whose sum is σ = 685538616. Its totient is φ = 195448560.

The previous prime is 391316729. The next prime is 391316741. The reversal of 391316732 is 237613193.

It is a junction number, because it is equal to n+sod(n) for n = 391316692 and 391316701.

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, 48218 + ... + 55745.

It is an arithmetic number, because the mean of its divisors is an integer number (57128218).

Almost surely, 2^391316732 is an apocalyptic number.

It is an amenable number.

391316732 is a deficient number, since it is larger than the sum of its proper divisors (294221884).

391316732 is a wasteful number, since it uses less digits than its factorization.

391316732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104908 (or 104906 counting only the distinct ones).

The product of its digits is 20412, while the sum is 35.

The square root of 391316732 is about 19781.7272248912. The cubic root of 391316732 is about 731.4356759171.

The spelling of 391316732 in words is "three hundred ninety-one million, three hundred sixteen thousand, seven hundred thirty-two".