1042313309 has 2 divisors, whose sum is σ = 1042313310. Its totient is φ = 1042313308.

The previous prime is 1042313269. The next prime is 1042313329. The reversal of 1042313309 is 9033132401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903002500 + 139310809 = 30050^2 + 11803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042313309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042313329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521156654 + 521156655.

It is an arithmetic number, because the mean of its divisors is an integer number (521156655).

Almost surely, 2^1042313309 is an apocalyptic number.

It is an amenable number.

1042313309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042313309 is an equidigital number, since it uses as much as digits as its factorization.

1042313309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1042313309 is about 32284.8774041346. The cubic root of 1042313309 is about 1013.9100497012.

It can be divided in two parts, 10423 and 13309, that added together give a palindrome (23732).

The spelling of 1042313309 in words is "one billion, forty-two million, three hundred thirteen thousand, three hundred nine".