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313130111 = 744732873
BaseRepresentation
bin10010101010011…
…111110001111111
3210211012122202112
4102222133301333
51120130130421
651023244235
710521363530
oct2252376177
9724178675
10313130111
11150832318
1288a4967b
134cb472b8
142d830687
151c75445b
hex12a9fc7f

313130111 has 4 divisors (see below), whose sum is σ = 357862992. Its totient is φ = 268397232.

The previous prime is 313130099. The next prime is 313130113. The reversal of 313130111 is 111031313.

It is a happy number.

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-313130111 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 (313130113) 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, 22366430 + ... + 22366443.

It is an arithmetic number, because the mean of its divisors is an integer number (89465748).

Almost surely, 2313130111 is an apocalyptic number.

313130111 is a deficient number, since it is larger than the sum of its proper divisors (44732881).

313130111 is an equidigital number, since it uses as much as digits as its factorization.

313130111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44732880.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 313130111 is about 17695.4827851630. The cubic root of 313130111 is about 679.0602004431.

Adding to 313130111 its reverse (111031313), we get a palindrome (424161424).

The spelling of 313130111 in words is "three hundred thirteen million, one hundred thirty thousand, one hundred eleven".

Divisors: 1 7 44732873 313130111