31930473480 has 128 divisors (see below), whose sum is σ = 97272161280. Its totient is φ = 8384142080.

The previous prime is 31930473467. The next prime is 31930473569. The reversal of 31930473480 is 8437403913.

It is a Cunningham number, because it is equal to 178691²-1.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2136835 + ... + 2151725.

It is an arithmetic number, because the mean of its divisors is an integer number (759938760).

Almost surely, 2^31930473480 is an apocalyptic number.

31930473480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31930473480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48636080640).

31930473480 is an abundant number, since it is smaller than the sum of its proper divisors (65341687800).

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

31930473480 is a wasteful number, since it uses less digits than its factorization.

31930473480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15179 (or 15175 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 31930473480 in words is "thirty-one billion, nine hundred thirty million, four hundred seventy-three thousand, four hundred eighty".