1279231 has 8 divisors (see below), whose sum is σ = 1323824. Its totient is φ = 1235520.

The previous prime is 1279211. The next prime is 1279249. The reversal of 1279231 is 1329721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1279231 is a prime.

It is a super-2 number, since 2×1279231² = 3272863902722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1279196 and 1279205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279211) 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 7 ways as a sum of consecutive naturals, for example, 3931 + ... + 4243.

It is an arithmetic number, because the mean of its divisors is an integer number (165478).

2^1279231 is an apocalyptic number.

1279231 is a deficient number, since it is larger than the sum of its proper divisors (44593).

1279231 is an equidigital number, since it uses as much as digits as its factorization.

1279231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441.

The product of its digits is 756, while the sum is 25.

The square root of 1279231 is about 1131.0309456421. The cubic root of 1279231 is about 108.5549566918.

The spelling of 1279231 in words is "one million, two hundred seventy-nine thousand, two hundred thirty-one".