31409790168 has 32 divisors (see below), whose sum is σ = 78729523200. Its totient is φ = 10442590368.

The previous prime is 31409790151. The next prime is 31409790193. The reversal of 31409790168 is 86109790413.

It is a happy number.

It is a super-3 number, since 3×31409790168³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1699348 + ... + 1717731.

It is an arithmetic number, because the mean of its divisors is an integer number (2460297600).

Almost surely, 2^31409790168 is an apocalyptic number.

It is an amenable number.

31409790168 is an abundant number, since it is smaller than the sum of its proper divisors (47319733032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31409790168 is a wasteful number, since it uses less digits than its factorization.

31409790168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417471 (or 3417467 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 31409790168 in words is "thirty-one billion, four hundred nine million, seven hundred ninety thousand, one hundred sixty-eight".