31430031745 has 32 divisors (see below), whose sum is σ = 43415366400. Its totient is φ = 21396600576.

The previous prime is 31430031739. The next prime is 31430031791. The reversal of 31430031745 is 54713003413.

It is a cyclic number.

It is not a de Polignac number, because 31430031745 - 2²⁹ = 30893160833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11147946 + ... + 11150764.

It is an arithmetic number, because the mean of its divisors is an integer number (1356730200).

Almost surely, 2^31430031745 is an apocalyptic number.

31430031745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31430031745 is a deficient number, since it is larger than the sum of its proper divisors (11985334655).

31430031745 is a wasteful number, since it uses less digits than its factorization.

31430031745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017.

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 31430031745 in words is "thirty-one billion, four hundred thirty million, thirty-one thousand, seven hundred forty-five".