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2131389095 = 511175922031
BaseRepresentation
bin111111100001010…
…0110101010100111
312111112120210011212
41333002212222213
513331113422340
6551255022035
7103550336243
oct17702465247
95445523155
102131389095
119a41281a0
124b596a91b
1327c75b1a4
141630db423
15c71b7a65
hex7f0a6aa7

2131389095 has 16 divisors (see below), whose sum is σ = 2791895040. Its totient is φ = 1549149600.

The previous prime is 2131389079. The next prime is 2131389109. The reversal of 2131389095 is 5909831312.

It is not a de Polignac number, because 2131389095 - 24 = 2131389079 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85730 + ... + 107760.

It is an arithmetic number, because the mean of its divisors is an integer number (174493440).

Almost surely, 22131389095 is an apocalyptic number.

2131389095 is a deficient number, since it is larger than the sum of its proper divisors (660505945).

2131389095 is a wasteful number, since it uses less digits than its factorization.

2131389095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23806.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 2131389095 is about 46166.9697402808. The cubic root of 2131389095 is about 1286.9279894716.

The spelling of 2131389095 in words is "two billion, one hundred thirty-one million, three hundred eighty-nine thousand, ninety-five".

Divisors: 1 5 11 55 1759 8795 19349 22031 96745 110155 242341 1211705 38752529 193762645 426277819 2131389095