31550641603 has 6 divisors (see below), whose sum is σ = 34164304404. Its totient is φ = 29123669016.

The previous prime is 31550641601. The next prime is 31550641631. The reversal of 31550641603 is 30614605513.

It is not a de Polignac number, because 31550641603 - 2¹ = 31550641601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31550641601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93344925 + ... + 93345262.

It is an arithmetic number, because the mean of its divisors is an integer number (5694050734).

Almost surely, 2^31550641603 is an apocalyptic number.

31550641603 is a deficient number, since it is larger than the sum of its proper divisors (2613662801).

31550641603 is a wasteful number, since it uses less digits than its factorization.

31550641603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186690213 (or 186690200 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 31550641603 in words is "thirty-one billion, five hundred fifty million, six hundred forty-one thousand, six hundred three".