31361576464 has 15 divisors (see below), whose sum is σ = 60764426893. Its totient is φ = 15680434048.

The previous prime is 31361576443. The next prime is 31361576473. The reversal of 31361576464 is 46467516313.

The square root of 31361576464 is 177092.

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

It can be written as a sum of positive squares in only one way, i.e., 2117840400 + 29243736064 = 46020^2 + 171008^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 686232 + ... + 730504.

Almost surely, 2^31361576464 is an apocalyptic number.

31361576464 is the 177092-nd square number.

It is an amenable number.

31361576464 is a deficient number, since it is larger than the sum of its proper divisors (29402850429).

31361576464 is an frugal number, since it uses more digits than its factorization.

31361576464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88554 (or 44275 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 46.

The spelling of 31361576464 in words is "thirty-one billion, three hundred sixty-one million, five hundred seventy-six thousand, four hundred sixty-four".