1204312313 has 2 divisors, whose sum is σ = 1204312314. Its totient is φ = 1204312312.

The previous prime is 1204312271. The next prime is 1204312331. The reversal of 1204312313 is 3132134021.

Together with next prime (1204312331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806389609 + 397922704 = 28397^2 + 19948^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204312313 - 2¹⁰ = 1204311289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1204315313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602156156 + 602156157.

It is an arithmetic number, because the mean of its divisors is an integer number (602156157).

Almost surely, 2^1204312313 is an apocalyptic number.

It is an amenable number.

1204312313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204312313 is an equidigital number, since it uses as much as digits as its factorization.

1204312313 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 1204312313 is about 34703.2032095021. The cubic root of 1204312313 is about 1063.9299686439.

Adding to 1204312313 its reverse (3132134021), we get a palindrome (4336446334).

The spelling of 1204312313 in words is "one billion, two hundred four million, three hundred twelve thousand, three hundred thirteen".