39997362631 has 8 divisors (see below), whose sum is σ = 42110364800. Its totient is φ = 37885148280.

The previous prime is 39997362623. The next prime is 39997362661. The reversal of 39997362631 is 13626379993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39997362631 - 2³ = 39997362623 is a prime.

It is a super-2 number, since 2×39997362631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39997362661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91275 + ... + 297196.

It is an arithmetic number, because the mean of its divisors is an integer number (5263795600).

Almost surely, 2^39997362631 is an apocalyptic number.

39997362631 is a deficient number, since it is larger than the sum of its proper divisors (2113002169).

39997362631 is a wasteful number, since it uses less digits than its factorization.

39997362631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393909.

The product of its digits is 9920232, while the sum is 58.

The spelling of 39997362631 in words is "thirty-nine billion, nine hundred ninety-seven million, three hundred sixty-two thousand, six hundred thirty-one".