31001664216532 has 6 divisors (see below), whose sum is σ = 54252912378938. Its totient is φ = 15500832108264.

The previous prime is 31001664216521. The next prime is 31001664216563. The reversal of 31001664216532 is 23561246610013.

It can be written as a sum of positive squares in only one way, i.e., 30244214276676 + 757449939856 = 5499474^2 + 870316^2 .

It is a super-3 number, since 3×31001664216532³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3875208027063 + ... + 3875208027070.

Almost surely, 2^{31001664216532} is an apocalyptic number.

It is an amenable number.

31001664216532 is a deficient number, since it is larger than the sum of its proper divisors (23251248162406).

31001664216532 is a wasteful number, since it uses less digits than its factorization.

31001664216532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7750416054137 (or 7750416054135 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 31001664216532 in words is "thirty-one trillion, one billion, six hundred sixty-four million, two hundred sixteen thousand, five hundred thirty-two".