31984372101 has 64 divisors (see below), whose sum is σ = 50563408896. Its totient is φ = 17763916800.

The previous prime is 31984372099. The next prime is 31984372103. The reversal of 31984372101 is 10127348913.

It is an interprime number because it is at equal distance from previous prime (31984372099) and next prime (31984372103).

It is not a de Polignac number, because 31984372101 - 2¹ = 31984372099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31984372101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31984372103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8368771 + ... + 8372591.

It is an arithmetic number, because the mean of its divisors is an integer number (790053264).

Almost surely, 2^31984372101 is an apocalyptic number.

It is an amenable number.

31984372101 is a deficient number, since it is larger than the sum of its proper divisors (18579036795).

31984372101 is a wasteful number, since it uses less digits than its factorization.

31984372101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 31984372101 in words is "thirty-one billion, nine hundred eighty-four million, three hundred seventy-two thousand, one hundred one".