31499485248 has 448 divisors, whose sum is σ = 107443316736. Its totient is φ = 7907328000.

The previous prime is 31499485187. The next prime is 31499485309. The reversal of 31499485248 is 84258499413.

It is an interprime number because it is at equal distance from previous prime (31499485187) and next prime (31499485309).

It is a tau number, because it is divible by the number of its divisors (448).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95164443 + ... + 95164773.

It is an arithmetic number, because the mean of its divisors is an integer number (239828832).

Almost surely, 2^31499485248 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 31499485248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53721658368).

31499485248 is an abundant number, since it is smaller than the sum of its proper divisors (75943831488).

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

31499485248 is a wasteful number, since it uses less digits than its factorization.

31499485248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 552 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 57.

The spelling of 31499485248 in words is "thirty-one billion, four hundred ninety-nine million, four hundred eighty-five thousand, two hundred forty-eight".