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331930086 = 2355321681
BaseRepresentation
bin10011110010001…
…101100111100110
3212010120210110220
4103302031213212
51134433230321
652534225210
711140234125
oct2362154746
9763523426
10331930086
11160402a94
12931b5206
13539ca447
1432125abc
151e2199c6
hex13c8d9e6

331930086 has 8 divisors (see below), whose sum is σ = 663860184. Its totient is φ = 110643360.

The previous prime is 331930073. The next prime is 331930087. The reversal of 331930086 is 680039133.

331930086 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

331930086 is an admirable number.

It is a super-2 number, since 2×3319300862 = 220355163983934792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331930087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27660835 + ... + 27660846.

It is an arithmetic number, because the mean of its divisors is an integer number (82982523).

Almost surely, 2331930086 is an apocalyptic number.

331930086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

331930086 is a wasteful number, since it uses less digits than its factorization.

331930086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55321686.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 331930086 is about 18218.9485426574. The cubic root of 331930086 is about 692.3869484895.

The spelling of 331930086 in words is "three hundred thirty-one million, nine hundred thirty thousand, eighty-six".

Divisors: 1 2 3 6 55321681 110643362 165965043 331930086