31355084161 has 8 divisors (see below), whose sum is σ = 31421494080. Its totient is φ = 31288730928.

The previous prime is 31355084149. The next prime is 31355084209. The reversal of 31355084161 is 16148055313.

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 31355084161 - 2²⁷ = 31220866433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31355084161.

It is not an unprimeable number, because it can be changed into a prime (31355084141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201510 + ... + 1227328.

It is an arithmetic number, because the mean of its divisors is an integer number (3927686760).

Almost surely, 2^31355084161 is an apocalyptic number.

It is an amenable number.

31355084161 is a deficient number, since it is larger than the sum of its proper divisors (66409919).

31355084161 is a wasteful number, since it uses less digits than its factorization.

31355084161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28343.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 31355084161 in words is "thirty-one billion, three hundred fifty-five million, eighty-four thousand, one hundred sixty-one".