31320042192 has 30 divisors (see below), whose sum is σ = 87652618482. Its totient is φ = 10440014016.

The previous prime is 31320042181. The next prime is 31320042203. The reversal of 31320042192 is 29124002313.

It is a happy number.

31320042192 is a `hidden beast` number, since 31 + 3 + 200 + 421 + 9 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (31320042181) and next prime (31320042203).

It can be written as a sum of positive squares in only one way, i.e., 18315832896 + 13004209296 = 135336^2 + 114036^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108750003 + ... + 108750290.

Almost surely, 2^31320042192 is an apocalyptic number.

It is an amenable number.

31320042192 is an abundant number, since it is smaller than the sum of its proper divisors (56332576290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31320042192 is a wasteful number, since it uses less digits than its factorization.

31320042192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217500307 (or 217500298 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 31320042192 in words is "thirty-one billion, three hundred twenty million, forty-two thousand, one hundred ninety-two".