31503043045 has 16 divisors (see below), whose sum is σ = 39033100800. Its totient is φ = 24383217600.

The previous prime is 31503043037. The next prime is 31503043079. The reversal of 31503043045 is 54034030513.

It is not a de Polignac number, because 31503043045 - 2³ = 31503043037 is a prime.

It is a congruent number.

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, 636606 + ... + 684304.

It is an arithmetic number, because the mean of its divisors is an integer number (2439568800).

Almost surely, 2^31503043045 is an apocalyptic number.

It is an amenable number.

31503043045 is a deficient number, since it is larger than the sum of its proper divisors (7530057755).

31503043045 is a wasteful number, since it uses less digits than its factorization.

31503043045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51996.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 31503043045 its reverse (54034030513), we get a palindrome (85537073558).

The spelling of 31503043045 in words is "thirty-one billion, five hundred three million, forty-three thousand, forty-five".