31848690720 has 1296 divisors, whose sum is σ = 139750458624. Its totient is φ = 6067353600.

The previous prime is 31848690719. The next prime is 31848690733. The reversal of 31848690720 is 2709684813.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 31848690720.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 1027377105 + ... + 1027377135.

It is an arithmetic number, because the mean of its divisors is an integer number (107832144).

Almost surely, 2^31848690720 is an apocalyptic number.

31848690720 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 31848690720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69875229312).

31848690720 is an abundant number, since it is smaller than the sum of its proper divisors (107901767904).

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

31848690720 is a wasteful number, since it uses less digits than its factorization.

31848690720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 31848690720 in words is "thirty-one billion, eight hundred forty-eight million, six hundred ninety thousand, seven hundred twenty".