31545020545 has 16 divisors (see below), whose sum is σ = 38788888320. Its totient is φ = 24613142400.

The previous prime is 31545020539. The next prime is 31545020557. The reversal of 31545020545 is 54502054513.

It is not a de Polignac number, because 31545020545 - 2¹¹ = 31545018497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31545020545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723166 + ... + 765544.

It is an arithmetic number, because the mean of its divisors is an integer number (2424305520).

Almost surely, 2^31545020545 is an apocalyptic number.

It is an amenable number.

31545020545 is a deficient number, since it is larger than the sum of its proper divisors (7243867775).

31545020545 is a wasteful number, since it uses less digits than its factorization.

31545020545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46056.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 31545020545 in words is "thirty-one billion, five hundred forty-five million, twenty thousand, five hundred forty-five".