31655422653 has 4 divisors (see below), whose sum is σ = 42207230208. Its totient is φ = 21103615100.

The previous prime is 31655422651. The next prime is 31655422697. The reversal of 31655422653 is 35622455613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31655422653 - 2¹ = 31655422651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31655422651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5275903773 + ... + 5275903778.

It is an arithmetic number, because the mean of its divisors is an integer number (10551807552).

Almost surely, 2^31655422653 is an apocalyptic number.

It is an amenable number.

31655422653 is a deficient number, since it is larger than the sum of its proper divisors (10551807555).

31655422653 is a wasteful number, since it uses less digits than its factorization.

31655422653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551807554.

The product of its digits is 648000, while the sum is 42.

The spelling of 31655422653 in words is "thirty-one billion, six hundred fifty-five million, four hundred twenty-two thousand, six hundred fifty-three".