731432036644 has 9 divisors (see below), whose sum is σ = 1280009057467. Its totient is φ = 365715163084.

The previous prime is 731432036633. The next prime is 731432036663. The reversal of 731432036644 is 446630234137.

The square root of 731432036644 is 855238.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 731432036644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1496667 + ... + 1924285.

Almost surely, 2^731432036644 is an apocalyptic number.

731432036644 is the 855238-th square number.

It is an amenable number.

731432036644 is a deficient number, since it is larger than the sum of its proper divisors (548577020823).

731432036644 is an frugal number, since it uses more digits than its factorization.

731432036644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855242 (or 427621 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 43.

The spelling of 731432036644 in words is "seven hundred thirty-one billion, four hundred thirty-two million, thirty-six thousand, six hundred forty-four".