1244413331 has 4 divisors (see below), whose sum is σ = 1422186672. Its totient is φ = 1066639992.

The previous prime is 1244413327. The next prime is 1244413337. The reversal of 1244413331 is 1333144421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1244413331 - 2² = 1244413327 is a prime.

It is a super-2 number, since 2×1244413331² = 3097129076741031122, 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 1244413331.

It is not an unprimeable number, because it can be changed into a prime (1244413337) 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, 88886660 + ... + 88886673.

It is an arithmetic number, because the mean of its divisors is an integer number (355546668).

Almost surely, 2^1244413331 is an apocalyptic number.

1244413331 is a deficient number, since it is larger than the sum of its proper divisors (177773341).

1244413331 is an equidigital number, since it uses as much as digits as its factorization.

1244413331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177773340.

The product of its digits is 3456, while the sum is 26.

The square root of 1244413331 is about 35276.2431531477. The cubic root of 1244413331 is about 1075.6101331102.

Adding to 1244413331 its reverse (1333144421), we get a palindrome (2577557752).

The spelling of 1244413331 in words is "one billion, two hundred forty-four million, four hundred thirteen thousand, three hundred thirty-one".