1020323573 has 2 divisors, whose sum is σ = 1020323574. Its totient is φ = 1020323572.

The previous prime is 1020323471. The next prime is 1020323597. The reversal of 1020323573 is 3753230201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 693690244 + 326633329 = 26338^2 + 18073^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020323573 - 2²² = 1016129269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020323173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510161786 + 510161787.

It is an arithmetic number, because the mean of its divisors is an integer number (510161787).

Almost surely, 2^1020323573 is an apocalyptic number.

It is an amenable number.

1020323573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020323573 is an equidigital number, since it uses as much as digits as its factorization.

1020323573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 1020323573 is about 31942.5041754713. The cubic root of 1020323573 is about 1006.7291414209.

Adding to 1020323573 its reverse (3753230201), we get a palindrome (4773553774).

The spelling of 1020323573 in words is "one billion, twenty million, three hundred twenty-three thousand, five hundred seventy-three".