1247231 has 2 divisors, whose sum is σ = 1247232. Its totient is φ = 1247230.

The previous prime is 1247209. The next prime is 1247243. The reversal of 1247231 is 1327421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1247231 - 2⁶ = 1247167 is a prime.

It is a super-2 number, since 2×1247231² = 3111170334722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623615 + 623616.

It is an arithmetic number, because the mean of its divisors is an integer number (623616).

2^1247231 is an apocalyptic number.

1247231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247231 is an equidigital number, since it uses as much as digits as its factorization.

1247231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 1247231 is about 1116.7949677537. The cubic root of 1247231 is about 107.6421339668.

The spelling of 1247231 in words is "one million, two hundred forty-seven thousand, two hundred thirty-one".