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313130213 = 1128929077
BaseRepresentation
bin10010101010011…
…111110011100101
3210211012122220022
4102222133303211
51120130131323
651023244525
710521364034
oct2252376345
9724178808
10313130213
11150832400
1288a49745
134cb47366
142d83071b
151c7544c8
hex12a9fce5

313130213 has 12 divisors (see below), whose sum is σ = 348063660. Its totient is φ = 281455680.

The previous prime is 313130189. The next prime is 313130227. The reversal of 313130213 is 312031313.

It can be written as a sum of positive squares in 2 ways, for example, as 155326369 + 157803844 = 12463^2 + 12562^2 .

It is not a de Polignac number, because 313130213 - 218 = 312868069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313130191 and 313130200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313130273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3770 + ... + 25307.

It is an arithmetic number, because the mean of its divisors is an integer number (29005305).

Almost surely, 2313130213 is an apocalyptic number.

It is an amenable number.

313130213 is a deficient number, since it is larger than the sum of its proper divisors (34933447).

313130213 is a wasteful number, since it uses less digits than its factorization.

313130213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29188 (or 29177 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 313130213 is about 17695.4856672542. The cubic root of 313130213 is about 679.0602741762.

Adding to 313130213 its reverse (312031313), we get a palindrome (625161526).

The spelling of 313130213 in words is "three hundred thirteen million, one hundred thirty thousand, two hundred thirteen".

Divisors: 1 11 89 121 979 10769 29077 319847 2587853 3518317 28466383 313130213