1229331 has 4 divisors (see below), whose sum is σ = 1639112. Its totient is φ = 819552.

The previous prime is 1229329. The next prime is 1229351. The reversal of 1229331 is 1339221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1229331 - 2¹ = 1229329 is a prime.

It is a super-2 number, since 2×1229331² = 3022509415122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1229298 and 1229307.

It is not an unprimeable number, because it can be changed into a prime (1229311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204886 + ... + 204891.

It is an arithmetic number, because the mean of its divisors is an integer number (409778).

2^1229331 is an apocalyptic number.

1229331 is a deficient number, since it is larger than the sum of its proper divisors (409781).

1229331 is an equidigital number, since it uses as much as digits as its factorization.

1229331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409780.

The product of its digits is 324, while the sum is 21.

The square root of 1229331 is about 1108.7520011256. The cubic root of 1229331 is about 107.1246981289.

It can be divided in two parts, 122 and 9331, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 1229331 in words is "one million, two hundred twenty-nine thousand, three hundred thirty-one".