1312047361 has 2 divisors, whose sum is σ = 1312047362. Its totient is φ = 1312047360.

The previous prime is 1312047329. The next prime is 1312047367. The reversal of 1312047361 is 1637402131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1304654400 + 7392961 = 36120^2 + 2719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312047361 - 2⁵ = 1312047329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312047367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656023680 + 656023681.

It is an arithmetic number, because the mean of its divisors is an integer number (656023681).

Almost surely, 2^1312047361 is an apocalyptic number.

It is an amenable number.

1312047361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312047361 is an equidigital number, since it uses as much as digits as its factorization.

1312047361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1312047361 is about 36222.1943150881. The cubic root of 1312047361 is about 1094.7539075695.

Adding to 1312047361 its reverse (1637402131), we get a palindrome (2949449492).

The spelling of 1312047361 in words is "one billion, three hundred twelve million, forty-seven thousand, three hundred sixty-one".