31407745345 has 8 divisors (see below), whose sum is σ = 37710731520. Its totient is φ = 25111904880.

The previous prime is 31407745339. The next prime is 31407745349. The reversal of 31407745345 is 54354770413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31407745345 - 2⁷ = 31407745217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31407745349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1776751 + ... + 1794340.

It is an arithmetic number, because the mean of its divisors is an integer number (4713841440).

Almost surely, 2^31407745345 is an apocalyptic number.

It is an amenable number.

31407745345 is a deficient number, since it is larger than the sum of its proper divisors (6302986175).

31407745345 is a wasteful number, since it uses less digits than its factorization.

31407745345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572855.

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 31407745345 in words is "thirty-one billion, four hundred seven million, seven hundred forty-five thousand, three hundred forty-five".