1442344331 has 4 divisors (see below), whose sum is σ = 1449896064. Its totient is φ = 1434792600.

The previous prime is 1442344303. The next prime is 1442344349. The reversal of 1442344331 is 1334432441.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442344331 is a prime.

It is a super-2 number, since 2×1442344331² = 4160714338335675122, 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 = 1442344294 and 1442344303.

It is not an unprimeable number, because it can be changed into a prime (1442344381) 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, 3775580 + ... + 3775961.

It is an arithmetic number, because the mean of its divisors is an integer number (362474016).

Almost surely, 2^1442344331 is an apocalyptic number.

1442344331 is a deficient number, since it is larger than the sum of its proper divisors (7551733).

1442344331 is an equidigital number, since it uses as much as digits as its factorization.

1442344331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7551732.

The product of its digits is 13824, while the sum is 29.

The square root of 1442344331 is about 37978.2086333729. The cubic root of 1442344331 is about 1129.8557079444.

Adding to 1442344331 its reverse (1334432441), we get a palindrome (2776776772).

The spelling of 1442344331 in words is "one billion, four hundred forty-two million, three hundred forty-four thousand, three hundred thirty-one".