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31969068960 = 2535234367343
BaseRepresentation
bin11101110001100000…
…010100011110100000
310001111222102222012010
4131301200110132200
51010433040201320
622404132032520
72211136413453
oct356140243640
9101458388163
1031969068960
1112615784754
126242462740
1330262cc76a
141793b7149a
15c7192bae0
hex7718147a0

31969068960 has 192 divisors, whose sum is σ = 107526279168. Its totient is φ = 7964673024.

The previous prime is 31969068953. The next prime is 31969068991. The reversal of 31969068960 is 6986096913.

It is a self number, because there is not a number n which added to its sum of digits gives 31969068960.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441049 + ... + 508391.

It is an arithmetic number, because the mean of its divisors is an integer number (560032704).

Almost surely, 231969068960 is an apocalyptic number.

31969068960 is a gapful number since it is divisible by the number (30) 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 31969068960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53763139584).

31969068960 is an abundant number, since it is smaller than the sum of its proper divisors (75557210208).

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

31969068960 is a wasteful number, since it uses less digits than its factorization.

31969068960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67427 (or 67419 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 57.

The spelling of 31969068960 in words is "thirty-one billion, nine hundred sixty-nine million, sixty-eight thousand, nine hundred sixty".