31406673616 has 20 divisors (see below), whose sum is σ = 61253417824. Its totient is φ = 15599340000.

The previous prime is 31406673611. The next prime is 31406673631. The reversal of 31406673616 is 61637660413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31406673611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6497310 + ... + 6502141.

Almost surely, 2^31406673616 is an apocalyptic number.

It is an amenable number.

31406673616 is a deficient number, since it is larger than the sum of its proper divisors (29846744208).

31406673616 is a wasteful number, since it uses less digits than its factorization.

31406673616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12999610 (or 12999604 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 43.

The spelling of 31406673616 in words is "thirty-one billion, four hundred six million, six hundred seventy-three thousand, six hundred sixteen".