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312113201 = 509613189
BaseRepresentation
bin10010100110100…
…111100000110001
3210202021222211012
4102212213200301
51114400110301
650545400305
710506630011
oct2246474061
9722258735
10312113201
111501a82a4
1288639095
134c87c48a
142d647c41
151c602ebb
hex129a7831

312113201 has 4 divisors (see below), whose sum is σ = 312726900. Its totient is φ = 311499504.

The previous prime is 312113189. The next prime is 312113267. The reversal of 312113201 is 102311213.

Adding to 312113201 its reverse (102311213), we get a palindrome (414424414).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 295014976 + 17098225 = 17176^2 + 4135^2 .

It is a cyclic number.

It is not a de Polignac number, because 312113201 - 226 = 245004337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312113101) 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, 306086 + ... + 307103.

It is an arithmetic number, because the mean of its divisors is an integer number (78181725).

Almost surely, 2312113201 is an apocalyptic number.

It is an amenable number.

312113201 is a deficient number, since it is larger than the sum of its proper divisors (613699).

312113201 is an equidigital number, since it uses as much as digits as its factorization.

312113201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613698.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 312113201 is about 17666.7258143664. The cubic root of 312113201 is about 678.3243061473.

The spelling of 312113201 in words is "three hundred twelve million, one hundred thirteen thousand, two hundred one".

Divisors: 1 509 613189 312113201