31636748227 has 12 divisors (see below), whose sum is σ = 36818252136. Its totient is φ = 27105187200.

The previous prime is 31636748219. The next prime is 31636748243. The reversal of 31636748227 is 72284763613.

It is not a de Polignac number, because 31636748227 - 2³ = 31636748219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31636748207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30649 + ... + 253402.

It is an arithmetic number, because the mean of its divisors is an integer number (3068187678).

Almost surely, 2^31636748227 is an apocalyptic number.

31636748227 is a deficient number, since it is larger than the sum of its proper divisors (5181503909).

31636748227 is a wasteful number, since it uses less digits than its factorization.

31636748227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286338 (or 286331 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 49.

The spelling of 31636748227 in words is "thirty-one billion, six hundred thirty-six million, seven hundred forty-eight thousand, two hundred twenty-seven".