31606134399 has 36 divisors (see below), whose sum is σ = 53185168296. Its totient is φ = 18034033248.

The previous prime is 31606134397. The next prime is 31606134419. The reversal of 31606134399 is 99343160613.

31606134399 is a `hidden beast` number, since 3 + 1 + 606 + 1 + 3 + 4 + 39 + 9 = 666.

It is not a de Polignac number, because 31606134399 - 2¹ = 31606134397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31606134397) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 248737 + ... + 353669.

It is an arithmetic number, because the mean of its divisors is an integer number (1477365786).

Almost surely, 2^31606134399 is an apocalyptic number.

31606134399 is a deficient number, since it is larger than the sum of its proper divisors (21579033897).

31606134399 is a wasteful number, since it uses less digits than its factorization.

31606134399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105636 (or 105626 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The spelling of 31606134399 in words is "thirty-one billion, six hundred six million, one hundred thirty-four thousand, three hundred ninety-nine".