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331888895 = 5139752639
BaseRepresentation
bin10011110010000…
…011100011111111
3212010111200222022
4103302003203333
51134430421040
652533310355
711140003052
oct2362034377
9763450868
10331888895
11160385048
12931953bb
13539b4780
1432114a99
151e20c6b5
hex13c838ff

331888895 has 16 divisors (see below), whose sum is σ = 433332480. Its totient is φ = 242555904.

The previous prime is 331888849. The next prime is 331888897. The reversal of 331888895 is 598888133.

It is a cyclic number.

It is not a de Polignac number, because 331888895 - 26 = 331888831 is a prime.

It is a super-2 number, since 2×3318888952 = 220300477248642050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331888897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20015 + ... + 32624.

It is an arithmetic number, because the mean of its divisors is an integer number (27083280).

Almost surely, 2331888895 is an apocalyptic number.

331888895 is a deficient number, since it is larger than the sum of its proper divisors (101443585).

331888895 is a wasteful number, since it uses less digits than its factorization.

331888895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52754.

The product of its digits is 1658880, while the sum is 53.

The square root of 331888895 is about 18217.8180636431. The cubic root of 331888895 is about 692.3583066240.

The spelling of 331888895 in words is "three hundred thirty-one million, eight hundred eighty-eight thousand, eight hundred ninety-five".

Divisors: 1 5 13 65 97 485 1261 6305 52639 263195 684307 3421535 5105983 25529915 66377779 331888895