1931321332 has 12 divisors (see below), whose sum is σ = 3404483460. Its totient is φ = 958611776.

The previous prime is 1931321317. The next prime is 1931321351. The reversal of 1931321332 is 2331231391.

It can be written as a sum of positive squares in 2 ways, for example, as 970073316 + 961248016 = 31146^2 + 31004^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1931321332.

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, 1761607 + ... + 1762702.

It is an arithmetic number, because the mean of its divisors is an integer number (283706955).

Almost surely, 2^1931321332 is an apocalyptic number.

It is an amenable number.

1931321332 is a deficient number, since it is larger than the sum of its proper divisors (1473162128).

1931321332 is a wasteful number, since it uses less digits than its factorization.

1931321332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524450 (or 3524448 counting only the distinct ones).

The product of its digits is 2916, while the sum is 28.

The square root of 1931321332 is about 43946.8011577635. The cubic root of 1931321332 is about 1245.3311338897.

The spelling of 1931321332 in words is "one billion, nine hundred thirty-one million, three hundred twenty-one thousand, three hundred thirty-two".