1200431317 has 2 divisors, whose sum is σ = 1200431318. Its totient is φ = 1200431316.

The previous prime is 1200431303. The next prime is 1200431329. The reversal of 1200431317 is 7131340021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1182740881 + 17690436 = 34391^2 + 4206^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200431317 - 2⁷ = 1200431189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200431347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600215658 + 600215659.

It is an arithmetic number, because the mean of its divisors is an integer number (600215659).

Almost surely, 2^1200431317 is an apocalyptic number.

It is an amenable number.

1200431317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200431317 is an equidigital number, since it uses as much as digits as its factorization.

1200431317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1200431317 is about 34647.2411167181. The cubic root of 1200431317 is about 1062.7858713501.

Adding to 1200431317 its reverse (7131340021), we get a palindrome (8331771338).

The spelling of 1200431317 in words is "one billion, two hundred million, four hundred thirty-one thousand, three hundred seventeen".