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131313013 = 1343234907
BaseRepresentation
bin1111101001110…
…10110101110101
3100011002101120221
413310322311311
5232104004023
621010254341
73153066526
oct764726565
9304071527
10131313013
1168139457
1237b873b1
1321288310
141362284d
15b7dc85d
hex7d3ad75

131313013 has 8 divisors (see below), whose sum is σ = 144703328. Its totient is φ = 118392624.

The previous prime is 131313001. The next prime is 131313031. The reversal of 131313013 is 310313131.

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

It is a cyclic number.

It is not a de Polignac number, because 131313013 - 225 = 97758581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131313113) 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, 116895 + ... + 118012.

It is an arithmetic number, because the mean of its divisors is an integer number (18087916).

Almost surely, 2131313013 is an apocalyptic number.

131313013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131313013 is a deficient number, since it is larger than the sum of its proper divisors (13390315).

131313013 is a wasteful number, since it uses less digits than its factorization.

131313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234963.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 131313013 is about 11459.1890201707. The cubic root of 131313013 is about 508.2794938828.

Adding to 131313013 its reverse (310313131), we get a palindrome (441626144).

The spelling of 131313013 in words is "one hundred thirty-one million, three hundred thirteen thousand, thirteen".

Divisors: 1 13 43 559 234907 3053791 10101001 131313013