31899829248 has 792 divisors, whose sum is σ = 117641908800. Its totient is φ = 8141930496.

The previous prime is 31899829229. The next prime is 31899829289. The reversal of 31899829248 is 84292899813.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 540675043 + ... + 540675101.

Almost surely, 2^31899829248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31899829248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58820954400).

31899829248 is an abundant number, since it is smaller than the sum of its proper divisors (85742079552).

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

31899829248 is a wasteful number, since it uses less digits than its factorization.

31899829248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 117 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The spelling of 31899829248 in words is "thirty-one billion, eight hundred ninety-nine million, eight hundred twenty-nine thousand, two hundred forty-eight".