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131461385 = 5112390207
BaseRepresentation
bin1111101010111…
…11000100001001
3100011100221010012
413311133010021
5232123231020
621013401305
73154255226
oct765370411
9304327105
10131461385
116822a980
1238039235
132130aa03
141366094d
15b81b7c5
hex7d5f109

131461385 has 8 divisors (see below), whose sum is σ = 172094976. Its totient is φ = 95608240.

The previous prime is 131461373. The next prime is 131461387. The reversal of 131461385 is 583164131.

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

It is not a de Polignac number, because 131461385 - 210 = 131460361 is a prime.

It is a super-2 number, since 2×1314613852 = 34564191492236450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131461387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195049 + ... + 1195158.

It is an arithmetic number, because the mean of its divisors is an integer number (21511872).

Almost surely, 2131461385 is an apocalyptic number.

It is an amenable number.

131461385 is a deficient number, since it is larger than the sum of its proper divisors (40633591).

131461385 is a wasteful number, since it uses less digits than its factorization.

131461385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390223.

The product of its digits is 8640, while the sum is 32.

The square root of 131461385 is about 11465.6611235463. The cubic root of 131461385 is about 508.4708586666.

The spelling of 131461385 in words is "one hundred thirty-one million, four hundred sixty-one thousand, three hundred eighty-five".

Divisors: 1 5 11 55 2390207 11951035 26292277 131461385