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313130131 = 604351817
BaseRepresentation
bin10010101010011…
…111110010010011
3210211012122210021
4102222133302103
51120130131011
651023244311
710521363556
oct2252376223
9724178707
10313130131
11150832336
1288a49697
134cb47302
142d83069d
151c754471
hex12a9fc93

313130131 has 4 divisors (see below), whose sum is σ = 313187992. Its totient is φ = 313072272.

The previous prime is 313130113. The next prime is 313130159. The reversal of 313130131 is 131031313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131031313 = 718718759.

It is a cyclic number.

It is not a de Polignac number, because 313130131 - 25 = 313130099 is a prime.

It is a super-2 number, since 2×3131301312 = 196100957880154322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313130231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19866 + ... + 31951.

It is an arithmetic number, because the mean of its divisors is an integer number (78296998).

Almost surely, 2313130131 is an apocalyptic number.

313130131 is a deficient number, since it is larger than the sum of its proper divisors (57861).

313130131 is an equidigital number, since it uses as much as digits as its factorization.

313130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57860.

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

The square root of 313130131 is about 17695.4833502790. The cubic root of 313130131 is about 679.0602149006.

Adding to 313130131 its reverse (131031313), we get a palindrome (444161444).

The spelling of 313130131 in words is "three hundred thirteen million, one hundred thirty thousand, one hundred thirty-one".

Divisors: 1 6043 51817 313130131