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31882696230 = 23572119720327
BaseRepresentation
bin11101101100010110…
…110101011000100110
310001021221220210002010
4131230112311120212
51010243432234410
622351404455050
72206040306100
oct355426653046
9101257823063
1031882696230
1112580a50630
12621954a486
13301144a838
1417864ca570
15c69069c20
hex76c5b5626

31882696230 has 192 divisors, whose sum is σ = 98109107712. Its totient is φ = 6556354560.

The previous prime is 31882696229. The next prime is 31882696249. The reversal of 31882696230 is 3269628813.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31882696230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1558327 + ... + 1578653.

It is an arithmetic number, because the mean of its divisors is an integer number (510984936).

Almost surely, 231882696230 is an apocalyptic number.

31882696230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31882696230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49054553856).

31882696230 is an abundant number, since it is smaller than the sum of its proper divisors (66226411482).

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

31882696230 is a wasteful number, since it uses less digits than its factorization.

31882696230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20459 (or 20452 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 31882696230 in words is "thirty-one billion, eight hundred eighty-two million, six hundred ninety-six thousand, two hundred thirty".