31660638607 has 8 divisors (see below), whose sum is σ = 34122177936. Its totient is φ = 29202828672.

The previous prime is 31660638601. The next prime is 31660638631. The reversal of 31660638607 is 70683606613.

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 31660638607 - 2³ = 31660638599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31660638601) 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, 914698 + ... + 948679.

It is an arithmetic number, because the mean of its divisors is an integer number (4265272242).

Almost surely, 2^31660638607 is an apocalyptic number.

31660638607 is a deficient number, since it is larger than the sum of its proper divisors (2461539329).

31660638607 is a wasteful number, since it uses less digits than its factorization.

31660638607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864697.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 31660638607 in words is "thirty-one billion, six hundred sixty million, six hundred thirty-eight thousand, six hundred seven".