1142203313 has 2 divisors, whose sum is σ = 1142203314. Its totient is φ = 1142203312.

The previous prime is 1142203303. The next prime is 1142203331. The reversal of 1142203313 is 3133022411.

Together with next prime (1142203331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 865712929 + 276490384 = 29423^2 + 16628^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142203313 - 2¹⁰ = 1142202289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142203303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571101656 + 571101657.

It is an arithmetic number, because the mean of its divisors is an integer number (571101657).

Almost surely, 2^1142203313 is an apocalyptic number.

It is an amenable number.

1142203313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142203313 is an equidigital number, since it uses as much as digits as its factorization.

1142203313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1142203313 is about 33796.4985316527. The cubic root of 1142203313 is about 1045.3164988380.

Adding to 1142203313 its reverse (3133022411), we get a palindrome (4275225724).

The spelling of 1142203313 in words is "one billion, one hundred forty-two million, two hundred three thousand, three hundred thirteen".