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313100131 = 718949549
BaseRepresentation
bin10010101010011…
…000011101100011
3210211011010122011
4102222120131203
51120123201011
651022453351
710521210241
oct2252303543
9724133564
10313100131
11150811843
1288a34257
134cb36766
142d823791
151c74a621
hex12a98763

313100131 has 8 divisors (see below), whose sum is σ = 321084000. Its totient is φ = 305215680.

The previous prime is 313100119. The next prime is 313100143. The reversal of 313100131 is 131001313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (313100119) and next prime (313100143).

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 313100131 - 27 = 313100003 is a prime.

It is a super-2 number, since 2×3131001312 = 196063384064434322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313100111) 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, 18456 + ... + 31093.

It is an arithmetic number, because the mean of its divisors is an integer number (40135500).

Almost surely, 2313100131 is an apocalyptic number.

313100131 is a deficient number, since it is larger than the sum of its proper divisors (7983869).

313100131 is an equidigital number, since it uses as much as digits as its factorization.

313100131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49709.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 313100131 is about 17694.6356560399. The cubic root of 313100131 is about 679.0385280096.

Adding to 313100131 its reverse (131001313), we get a palindrome (444101444).

It can be divided in two parts, 3 and 13100131, that multiplied together give a palindrome (39300393).

The spelling of 313100131 in words is "three hundred thirteen million, one hundred thousand, one hundred thirty-one".

Divisors: 1 71 89 6319 49549 3517979 4409861 313100131