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131070131 = 195167181
BaseRepresentation
bin1111100111111…
…11100010110011
3100010122001102022
413303333202303
5232023221011
621001142055
73151035443
oct763774263
9303561368
10131070131
1167a92a25
1237a8a92b
13212018ba
141359c123
15b7908db
hex7cff8b3

131070131 has 4 divisors (see below), whose sum is σ = 131139264. Its totient is φ = 131001000.

The previous prime is 131070097. The next prime is 131070143.

131070131 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131070131 is a prime.

It is a super-2 number, since 2×1310701312 = 34358758480714322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131070161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31640 + ... + 35541.

It is an arithmetic number, because the mean of its divisors is an integer number (32784816).

Almost surely, 2131070131 is an apocalyptic number.

131070131 is a deficient number, since it is larger than the sum of its proper divisors (69133).

131070131 is an equidigital number, since it uses as much as digits as its factorization.

131070131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69132.

The product of its (nonzero) digits is 63, while the sum is 17.

The square root of 131070131 is about 11448.5864192921. The cubic root of 131070131 is about 507.9659221875.

The spelling of 131070131 in words is "one hundred thirty-one million, seventy thousand, one hundred thirty-one".

Divisors: 1 1951 67181 131070131