1142440331 has 2 divisors, whose sum is σ = 1142440332. Its totient is φ = 1142440330.

The previous prime is 1142440279. The next prime is 1142440349. The reversal of 1142440331 is 1330442411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1142440331 - 2¹⁸ = 1142178187 is a prime.

It is a super-2 number, since 2×1142440331² = 2610339819790779122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1142440297 and 1142440306.

It is not a weakly prime, because it can be changed into another prime (1142440361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571220165 + 571220166.

It is an arithmetic number, because the mean of its divisors is an integer number (571220166).

Almost surely, 2^1142440331 is an apocalyptic number.

1142440331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142440331 is an equidigital number, since it uses as much as digits as its factorization.

1142440331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1142440331 is about 33800.0048964493. The cubic root of 1142440331 is about 1045.3887981936.

Adding to 1142440331 its reverse (1330442411), we get a palindrome (2472882742).

The spelling of 1142440331 in words is "one billion, one hundred forty-two million, four hundred forty thousand, three hundred thirty-one".