31282742208 has 56 divisors (see below), whose sum is σ = 83373144912. Its totient is φ = 10351458304.

The previous prime is 31282742201. The next prime is 31282742237. The reversal of 31282742208 is 80224728213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31282742201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568335 + ... + 620942.

Almost surely, 2^31282742208 is an apocalyptic number.

It is an amenable number.

31282742208 is an abundant number, since it is smaller than the sum of its proper divisors (52090402704).

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

31282742208 is a wasteful number, since it uses less digits than its factorization.

31282742208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189429 (or 1189419 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 31282742208 in words is "thirty-one billion, two hundred eighty-two million, seven hundred forty-two thousand, two hundred eight".