1203312310313 has 2 divisors, whose sum is σ = 1203312310314. Its totient is φ = 1203312310312.

The previous prime is 1203312310303. The next prime is 1203312310349. The reversal of 1203312310313 is 3130132133021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1163371488409 + 39940821904 = 1078597^2 + 199852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203312310313 - 2⁴ = 1203312310297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1203312310303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601656155156 + 601656155157.

It is an arithmetic number, because the mean of its divisors is an integer number (601656155157).

Almost surely, 2^{1203312310313} is an apocalyptic number.

It is an amenable number.

1203312310313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203312310313 is an equidigital number, since it uses as much as digits as its factorization.

1203312310313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1203312310313 its reverse (3130132133021), we get a palindrome (4333444443334).

The spelling of 1203312310313 in words is "one trillion, two hundred three billion, three hundred twelve million, three hundred ten thousand, three hundred thirteen".