31792778130 has 16 divisors (see below), whose sum is σ = 76302667584. Its totient is φ = 8478074160.

The previous prime is 31792778113. The next prime is 31792778131. The reversal of 31792778130 is 3187729713.

It is a self number, because there is not a number n which added to its sum of digits gives 31792778130.

It is not an unprimeable number, because it can be changed into a prime (31792778131) 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, 529879606 + ... + 529879665.

It is an arithmetic number, because the mean of its divisors is an integer number (4768916724).

Almost surely, 2^31792778130 is an apocalyptic number.

31792778130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31792778130 is an abundant number, since it is smaller than the sum of its proper divisors (44509889454).

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

31792778130 is a wasteful number, since it uses less digits than its factorization.

31792778130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059759281.

The product of its (nonzero) digits is 444528, while the sum is 48.

The spelling of 31792778130 in words is "thirty-one billion, seven hundred ninety-two million, seven hundred seventy-eight thousand, one hundred thirty".