31668019248 has 80 divisors (see below), whose sum is σ = 84488370176. Its totient is φ = 10210613760.

The previous prime is 31668019211. The next prime is 31668019267. The reversal of 31668019248 is 84291086613.

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

It is a junction number, because it is equal to n+sod(n) for n = 31668019197 and 31668019206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4390461 + ... + 4397667.

Almost surely, 2^31668019248 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 31668019248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42244185088).

31668019248 is an abundant number, since it is smaller than the sum of its proper divisors (52820350928).

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

31668019248 is a wasteful number, since it uses less digits than its factorization.

31668019248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202 (or 10196 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 31668019248 in words is "thirty-one billion, six hundred sixty-eight million, nineteen thousand, two hundred forty-eight".