1031442491 has 2 divisors, whose sum is σ = 1031442492. Its totient is φ = 1031442490.

The previous prime is 1031442457. The next prime is 1031442497. The reversal of 1031442491 is 1942441301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031442491 - 2⁶ = 1031442427 is a prime.

It is a super-2 number, since 2×1031442491² = 2127747224480570162, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1031442497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515721245 + 515721246.

It is an arithmetic number, because the mean of its divisors is an integer number (515721246).

Almost surely, 2^1031442491 is an apocalyptic number.

1031442491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031442491 is an equidigital number, since it uses as much as digits as its factorization.

1031442491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1031442491 is about 32116.0783876239. The cubic root of 1031442491 is about 1010.3728620394.

Adding to 1031442491 its reverse (1942441301), we get a palindrome (2973883792).

The spelling of 1031442491 in words is "one billion, thirty-one million, four hundred forty-two thousand, four hundred ninety-one".