31289045307 has 16 divisors (see below), whose sum is σ = 45543314208. Its totient is φ = 18991031040.

The previous prime is 31289045287. The next prime is 31289045339. The reversal of 31289045307 is 70354098213.

It is not a de Polignac number, because 31289045307 - 2¹⁵ = 31289012539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31289045807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5492244 + ... + 5497937.

It is an arithmetic number, because the mean of its divisors is an integer number (2846457138).

Almost surely, 2^31289045307 is an apocalyptic number.

31289045307 is a deficient number, since it is larger than the sum of its proper divisors (14254268901).

31289045307 is a wasteful number, since it uses less digits than its factorization.

31289045307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10990270.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 31289045307 in words is "thirty-one billion, two hundred eighty-nine million, forty-five thousand, three hundred seven".