1229831 has 8 divisors (see below), whose sum is σ = 1321344. Its totient is φ = 1140480.

The previous prime is 1229827. The next prime is 1229869. The reversal of 1229831 is 1389221.

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

It is a cyclic number.

It is not a de Polignac number, because 1229831 - 2² = 1229827 is a prime.

It is a super-2 number, since 2×1229831² = 3024968577122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1229831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746 + ... + 1736.

It is an arithmetic number, because the mean of its divisors is an integer number (165168).

2^1229831 is an apocalyptic number.

1229831 is a deficient number, since it is larger than the sum of its proper divisors (91513).

1229831 is an equidigital number, since it uses as much as digits as its factorization.

1229831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its digits is 864, while the sum is 26.

The square root of 1229831 is about 1108.9774569395. The cubic root of 1229831 is about 107.1392196014.

The spelling of 1229831 in words is "one million, two hundred twenty-nine thousand, eight hundred thirty-one".