31097029248 has 128 divisors (see below), whose sum is σ = 94018377600. Its totient is φ = 10112808960.

The previous prime is 31097029219. The next prime is 31097029259. The reversal of 31097029248 is 84292079013.

31097029248 is a `hidden beast` number, since 310 + 9 + 7 + 0 + 292 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

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, 31965 + ... + 251427.

It is an arithmetic number, because the mean of its divisors is an integer number (734518575).

Almost surely, 2^31097029248 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 31097029248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47009188800).

31097029248 is an abundant number, since it is smaller than the sum of its proper divisors (62921348352).

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

31097029248 is a wasteful number, since it uses less digits than its factorization.

31097029248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219527 (or 219509 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 31097029248 in words is "thirty-one billion, ninety-seven million, twenty-nine thousand, two hundred forty-eight".