31244804644 has 27 divisors (see below), whose sum is σ = 56518949403. Its totient is φ = 15113151000.

The previous prime is 31244804639. The next prime is 31244804651. The reversal of 31244804644 is 44640844213.

The square root of 31244804644 is 176762.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31244804597 and 31244804606.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10957819 + ... + 10960669.

Almost surely, 2^31244804644 is an apocalyptic number.

31244804644 is the 176762-nd square number.

It is an amenable number.

31244804644 is a deficient number, since it is larger than the sum of its proper divisors (25274144759).

31244804644 is an frugal number, since it uses more digits than its factorization.

31244804644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5768 (or 2884 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 40.

The spelling of 31244804644 in words is "thirty-one billion, two hundred forty-four million, eight hundred four thousand, six hundred forty-four".