231347227 has 4 divisors (see below), whose sum is σ = 232307416. Its totient is φ = 230387040.

The previous prime is 231347219. The next prime is 231347243. The reversal of 231347227 is 722743132.

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 231347227 - 2³ = 231347219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231347027) 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, 479733 + ... + 480214.

It is an arithmetic number, because the mean of its divisors is an integer number (58076854).

Almost surely, 2^231347227 is an apocalyptic number.

231347227 is a deficient number, since it is larger than the sum of its proper divisors (960189).

231347227 is an equidigital number, since it uses as much as digits as its factorization.

231347227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960188.

The product of its digits is 14112, while the sum is 31.

The square root of 231347227 is about 15210.1027938670. The cubic root of 231347227 is about 613.8865233602.

The spelling of 231347227 in words is "two hundred thirty-one million, three hundred forty-seven thousand, two hundred twenty-seven".