1203312317 has 2 divisors, whose sum is σ = 1203312318. Its totient is φ = 1203312316.

The previous prime is 1203312287. The next prime is 1203312349. The reversal of 1203312317 is 7132133021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 901560676 + 301751641 = 30026^2 + 17371^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203312317 - 2¹⁰ = 1203311293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1203312292 and 1203312301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203312917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601656158 + 601656159.

It is an arithmetic number, because the mean of its divisors is an integer number (601656159).

Almost surely, 2^1203312317 is an apocalyptic number.

It is an amenable number.

1203312317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203312317 is an equidigital number, since it uses as much as digits as its factorization.

1203312317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 1203312317 is about 34688.7923831315. The cubic root of 1203312317 is about 1063.6354104098.

Adding to 1203312317 its reverse (7132133021), we get a palindrome (8335445338).

The spelling of 1203312317 in words is "one billion, two hundred three million, three hundred twelve thousand, three hundred seventeen".