231357227 has 2 divisors, whose sum is σ = 231357228. Its totient is φ = 231357226.

The previous prime is 231357223. The next prime is 231357283. The reversal of 231357227 is 722753132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231357227 - 2² = 231357223 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231357193 and 231357202.

It is not a weakly prime, because it can be changed into another prime (231357223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115678613 + 115678614.

It is an arithmetic number, because the mean of its divisors is an integer number (115678614).

Almost surely, 2^231357227 is an apocalyptic number.

231357227 is a deficient number, since it is larger than the sum of its proper divisors (1).

231357227 is an equidigital number, since it uses as much as digits as its factorization.

231357227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 32.

The square root of 231357227 is about 15210.4315191910. The cubic root of 231357227 is about 613.8953683287.

The spelling of 231357227 in words is "two hundred thirty-one million, three hundred fifty-seven thousand, two hundred twenty-seven".