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131301131 = 1350919843
BaseRepresentation
bin1111101001101…
…11111100001011
3100011001210021212
413310313330023
5232103114011
621010123335
73153020063
oct764677413
9304053255
10131301131
1168130535
1237b8054b
1321282aa0
141361c3a3
15b7d908b
hex7d37f0b

131301131 has 8 divisors (see below), whose sum is σ = 141686160. Its totient is φ = 120956832.

The previous prime is 131301119. The next prime is 131301161. The reversal of 131301131 is 131103131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131301131 is a prime.

It is a super-2 number, since 2×1313011312 = 34479974003758322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131301101) 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, 3305 + ... + 16538.

It is an arithmetic number, because the mean of its divisors is an integer number (17710770).

Almost surely, 2131301131 is an apocalyptic number.

131301131 is a deficient number, since it is larger than the sum of its proper divisors (10385029).

131301131 is a wasteful number, since it uses less digits than its factorization.

131301131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20365.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 131301131 is about 11458.6705598861. The cubic root of 131301131 is about 508.2641626805.

Adding to 131301131 its reverse (131103131), we get a palindrome (262404262).

The spelling of 131301131 in words is "one hundred thirty-one million, three hundred one thousand, one hundred thirty-one".

Divisors: 1 13 509 6617 19843 257959 10100087 131301131