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131032497 = 3109400711
BaseRepresentation
bin1111100111101…
…10010110110001
3100010120010210110
413303312112301
5232021014442
621000251533
73150520641
oct763662661
9303503713
10131032497
1167a67722
1237a70ba9
13211ba72b
141358c521
15b78469c
hex7cf65b1

131032497 has 8 divisors (see below), whose sum is σ = 176313280. Its totient is φ = 86553360.

The previous prime is 131032471. The next prime is 131032501. The reversal of 131032497 is 794230131.

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

It is not a de Polignac number, because 131032497 - 210 = 131031473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131032457) 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 7 ways as a sum of consecutive naturals, for example, 200029 + ... + 200682.

It is an arithmetic number, because the mean of its divisors is an integer number (22039160).

Almost surely, 2131032497 is an apocalyptic number.

It is an amenable number.

131032497 is a deficient number, since it is larger than the sum of its proper divisors (45280783).

131032497 is a wasteful number, since it uses less digits than its factorization.

131032497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400823.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 131032497 is about 11446.9426922650. The cubic root of 131032497 is about 507.9173003306.

The spelling of 131032497 in words is "one hundred thirty-one million, thirty-two thousand, four hundred ninety-seven".

Divisors: 1 3 109 327 400711 1202133 43677499 131032497