31312392480 has 384 divisors, whose sum is σ = 116397388800. Its totient is φ = 7834632192.

The previous prime is 31312392479. The next prime is 31312392481. The reversal of 31312392480 is 8429321313.

It is an interprime number because it is at equal distance from previous prime (31312392479) and next prime (31312392481).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (31312392481) 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, 43549561 + ... + 43550279.

It is an arithmetic number, because the mean of its divisors is an integer number (303118200).

Almost surely, 2^31312392480 is an apocalyptic number.

31312392480 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 31312392480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58198694400).

31312392480 is an abundant number, since it is smaller than the sum of its proper divisors (85084996320).

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

31312392480 is a wasteful number, since it uses less digits than its factorization.

31312392480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 31312392480 in words is "thirty-one billion, three hundred twelve million, three hundred ninety-two thousand, four hundred eighty".