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131031341 = 7212492141
BaseRepresentation
bin1111100111101…
…10000100101101
3100010120002012122
413303312010231
5232021000331
621000242325
73150514400
oct763660455
9303502178
10131031341
1167a66871
1237a703a5
13211ba04c
141358bd37
15b78417b
hex7cf612d

131031341 has 12 divisors (see below), whose sum is σ = 152617500. Its totient is φ = 112170240.

The previous prime is 131031337. The next prime is 131031349. The reversal of 131031341 is 143130131.

It can be written as a sum of positive squares in 2 ways, for example, as 95628841 + 35402500 = 9779^2 + 5950^2 .

It is not a de Polignac number, because 131031341 - 22 = 131031337 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60131 + ... + 62271.

It is an arithmetic number, because the mean of its divisors is an integer number (12718125).

Almost surely, 2131031341 is an apocalyptic number.

It is an amenable number.

131031341 is a deficient number, since it is larger than the sum of its proper divisors (21586159).

131031341 is a wasteful number, since it uses less digits than its factorization.

131031341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404 (or 3397 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 131031341 is about 11446.8921983218. The cubic root of 131031341 is about 507.9158066703.

Adding to 131031341 its reverse (143130131), we get a palindrome (274161472).

The spelling of 131031341 in words is "one hundred thirty-one million, thirty-one thousand, three hundred forty-one".

Divisors: 1 7 49 1249 2141 8743 14987 61201 104909 2674109 18718763 131031341