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131290910 = 25611012131
BaseRepresentation
bin1111101001101…
…01011100011110
3100011001021021022
413310311130132
5232102302120
621010004142
73152645222
oct764653436
9304037238
10131290910
1168123893
1237b76652
132127b23a
1413618782
15b7d6025
hex7d3571e

131290910 has 32 divisors (see below), whose sum is σ = 242689824. Its totient is φ = 51120000.

The previous prime is 131290909. The next prime is 131290919. The reversal of 131290910 is 19092131.

It is a self number, because there is not a number n which added to its sum of digits gives 131290910.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131290919) 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, 60545 + ... + 62675.

It is an arithmetic number, because the mean of its divisors is an integer number (7584057).

Almost surely, 2131290910 is an apocalyptic number.

131290910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131290910 is a deficient number, since it is larger than the sum of its proper divisors (111398914).

131290910 is a wasteful number, since it uses less digits than its factorization.

131290910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 131290910 is about 11458.2245570594. The cubic root of 131290910 is about 508.2509739065.

The spelling of 131290910 in words is "one hundred thirty-one million, two hundred ninety thousand, nine hundred ten".

Divisors: 1 2 5 10 61 101 122 202 305 505 610 1010 2131 4262 6161 10655 12322 21310 30805 61610 129991 215231 259982 430462 649955 1076155 1299910 2152310 13129091 26258182 65645455 131290910