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313200401 = 1718423553
BaseRepresentation
bin10010101010110…
…000111100010001
3210211100020011212
4102222300330101
51120134403101
651024545505
710522105463
oct2252607421
9724306155
10313200401
11150880108
1288a82295
134cb702a7
142d84c133
151c76a1bb
hex12ab0f11

313200401 has 4 divisors (see below), whose sum is σ = 331623972. Its totient is φ = 294776832.

The previous prime is 313200397. The next prime is 313200403. The reversal of 313200401 is 104002313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104002313 = 163638051.

It can be written as a sum of positive squares in 2 ways, for example, as 259983376 + 53217025 = 16124^2 + 7295^2 .

It is a cyclic number.

It is not a de Polignac number, because 313200401 - 22 = 313200397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313200403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9211760 + ... + 9211793.

It is an arithmetic number, because the mean of its divisors is an integer number (82905993).

Almost surely, 2313200401 is an apocalyptic number.

It is an amenable number.

313200401 is a deficient number, since it is larger than the sum of its proper divisors (18423571).

313200401 is a wasteful number, since it uses less digits than its factorization.

313200401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18423570.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 313200401 is about 17697.4687738106. The cubic root of 313200401 is about 679.1110074067. Note that the first 3 decimals are identical.

Adding to 313200401 its reverse (104002313), we get a palindrome (417202714).

The spelling of 313200401 in words is "three hundred thirteen million, two hundred thousand, four hundred one".

Divisors: 1 17 18423553 313200401