31664051344 has 40 divisors (see below), whose sum is σ = 62219446272. Its totient is φ = 15607630080.

The previous prime is 31664051317. The next prime is 31664051347. The reversal of 31664051344 is 44315046613.

It is a super-2 number, since 2×31664051344² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31664051347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3021057 + ... + 3031519.

Almost surely, 2^31664051344 is an apocalyptic number.

It is an amenable number.

31664051344 is a deficient number, since it is larger than the sum of its proper divisors (30555394928).

31664051344 is a wasteful number, since it uses less digits than its factorization.

31664051344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13135 (or 13129 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 31664051344 its reverse (44315046613), we get a palindrome (75979097957).

The spelling of 31664051344 in words is "thirty-one billion, six hundred sixty-four million, fifty-one thousand, three hundred forty-four".