1020331243 has 2 divisors, whose sum is σ = 1020331244. Its totient is φ = 1020331242.

The previous prime is 1020331231. The next prime is 1020331259. The reversal of 1020331243 is 3421330201.

1020331243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020331243 - 2²⁵ = 986776811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020331243.

It is not a weakly prime, because it can be changed into another prime (1020331643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510165621 + 510165622.

It is an arithmetic number, because the mean of its divisors is an integer number (510165622).

Almost surely, 2^1020331243 is an apocalyptic number.

1020331243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020331243 is an equidigital number, since it uses as much as digits as its factorization.

1020331243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1020331243 is about 31942.6242347118. The cubic root of 1020331243 is about 1006.7316640171.

Adding to 1020331243 its reverse (3421330201), we get a palindrome (4441661444).

The spelling of 1020331243 in words is "one billion, twenty million, three hundred thirty-one thousand, two hundred forty-three".