1178231 has 2 divisors, whose sum is σ = 1178232. Its totient is φ = 1178230.

The previous prime is 1178227. The next prime is 1178237. The reversal of 1178231 is 1328711.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1328711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1178231 - 2² = 1178227 is a prime.

It is a super-2 number, since 2×1178231² = 2776456578722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1178197 and 1178206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1178237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589115 + 589116.

It is an arithmetic number, because the mean of its divisors is an integer number (589116).

2^1178231 is an apocalyptic number.

1178231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1178231 is an equidigital number, since it uses as much as digits as its factorization.

1178231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 23.

The square root of 1178231 is about 1085.4634954709. The cubic root of 1178231 is about 105.6193478763.

The spelling of 1178231 in words is "one million, one hundred seventy-eight thousand, two hundred thirty-one".