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131312130 = 23537911549
BaseRepresentation
bin1111101001110…
…10101000000010
3100011002100101020
413310322220002
5232103442010
621010250310
73153064125
oct764725002
9304070336
10131312130
1168138824
1237b86996
1321287ab1
14136223bc
15b7dc470
hex7d3aa02

131312130 has 32 divisors (see below), whose sum is σ = 316008000. Its totient is φ = 34921152.

The previous prime is 131312047. The next prime is 131312147. The reversal of 131312130 is 31213131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5596 + ... + 17144.

It is an arithmetic number, because the mean of its divisors is an integer number (9875250).

Almost surely, 2131312130 is an apocalyptic number.

131312130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131312130 is an abundant number, since it is smaller than the sum of its proper divisors (184695870).

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

131312130 is a wasteful number, since it uses less digits than its factorization.

131312130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11938.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131312130 is about 11459.1504920740. The cubic root of 131312130 is about 508.2783545903.

Adding to 131312130 its reverse (31213131), we get a palindrome (162525261).

The spelling of 131312130 in words is "one hundred thirty-one million, three hundred twelve thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 379 758 1137 1895 2274 3790 5685 11370 11549 23098 34647 57745 69294 115490 173235 346470 4377071 8754142 13131213 21885355 26262426 43770710 65656065 131312130