31606166401 has 8 divisors (see below), whose sum is σ = 31836446208. Its totient is φ = 31376562000.

The previous prime is 31606166393. The next prime is 31606166407. The reversal of 31606166401 is 10466160613.

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 31606166401 - 2³ = 31606166393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31606166407) 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, 74730 + ... + 262291.

It is an arithmetic number, because the mean of its divisors is an integer number (3979555776).

Almost surely, 2^31606166401 is an apocalyptic number.

It is an amenable number.

31606166401 is a deficient number, since it is larger than the sum of its proper divisors (230279807).

31606166401 is a wasteful number, since it uses less digits than its factorization.

31606166401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337703.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 31606166401 in words is "thirty-one billion, six hundred six million, one hundred sixty-six thousand, four hundred one".