31409790164 has 6 divisors (see below), whose sum is σ = 54967132794. Its totient is φ = 15704895080.

The previous prime is 31409790151. The next prime is 31409790193. The reversal of 31409790164 is 46109790413.

It can be written as a sum of positive squares in only one way, i.e., 25119714064 + 6290076100 = 158492^2 + 79310^2 .

It is a super-3 number, since 3×31409790164³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 as a sum of consecutive naturals, namely, 3926223767 + ... + 3926223774.

It is an arithmetic number, because the mean of its divisors is an integer number (9161188799).

Almost surely, 2^31409790164 is an apocalyptic number.

It is an amenable number.

31409790164 is a deficient number, since it is larger than the sum of its proper divisors (23557342630).

31409790164 is a wasteful number, since it uses less digits than its factorization.

31409790164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852447545 (or 7852447543 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 31409790164 in words is "thirty-one billion, four hundred nine million, seven hundred ninety thousand, one hundred sixty-four".