31406345416 has 16 divisors (see below), whose sum is σ = 58988963340. Its totient is φ = 15675955200.

The previous prime is 31406345407. The next prime is 31406345419. The reversal of 31406345416 is 61454360413.

It can be written as a sum of positive squares in 2 ways, for example, as 29737622916 + 1668722500 = 172446^2 + 40850^2 .

It is not an unprimeable number, because it can be changed into a prime (31406345419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3397285 + ... + 3406516.

Almost surely, 2^31406345416 is an apocalyptic number.

It is an amenable number.

31406345416 is a deficient number, since it is larger than the sum of its proper divisors (27582617924).

31406345416 is a wasteful number, since it uses less digits than its factorization.

31406345416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804384 (or 6804380 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 31406345416 in words is "thirty-one billion, four hundred six million, three hundred forty-five thousand, four hundred sixteen".