312540227 has 4 divisors (see below), whose sum is σ = 312604896. Its totient is φ = 312475560.

The previous prime is 312540209. The next prime is 312540247. The reversal of 312540227 is 722045213.

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

It is a cyclic number.

It is not a de Polignac number, because 312540227 - 2¹⁴ = 312523843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312540196 and 312540205.

It is not an unprimeable number, because it can be changed into a prime (312540247) 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, 24443 + ... + 34964.

It is an arithmetic number, because the mean of its divisors is an integer number (78151224).

Almost surely, 2^312540227 is an apocalyptic number.

312540227 is a deficient number, since it is larger than the sum of its proper divisors (64669).

312540227 is an equidigital number, since it uses as much as digits as its factorization.

312540227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64668.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 312540227 is about 17678.8072844296. The cubic root of 312540227 is about 678.6335210000.

The spelling of 312540227 in words is "three hundred twelve million, five hundred forty thousand, two hundred twenty-seven".