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31096485888 = 2113131931661
BaseRepresentation
bin11100111101011111…
…101011100000000000
32222021011112011020120
4130331133223200000
51002141200022023
622141401340240
72150412524466
oct347537534000
988234464216
1031096485888
1112208179116
12603a197680
132c175b5410
14170dd10836
15c200188e3
hex73d7eb800

31096485888 has 384 divisors, whose sum is σ = 97158297600. Its totient is φ = 8758886400.

The previous prime is 31096485887. The next prime is 31096485989. The reversal of 31096485888 is 88858469013.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31096485887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47044278 + ... + 47044938.

It is an arithmetic number, because the mean of its divisors is an integer number (253016400).

Almost surely, 231096485888 is an apocalyptic number.

31096485888 is a gapful number since it is divisible by the number (38) 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 31096485888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48579148800).

31096485888 is an abundant number, since it is smaller than the sum of its proper divisors (66061811712).

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

31096485888 is a wasteful number, since it uses less digits than its factorization.

31096485888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 60.

The spelling of 31096485888 in words is "thirty-one billion, ninety-six million, four hundred eighty-five thousand, eight hundred eighty-eight".