12315461 has 2 divisors, whose sum is σ = 12315462. Its totient is φ = 12315460.

The previous prime is 12315449. The next prime is 12315467. The reversal of 12315461 is 16451321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8375236 + 3940225 = 2894^2 + 1985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12315461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12315467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157730 + 6157731.

It is an arithmetic number, because the mean of its divisors is an integer number (6157731).

Almost surely, 2^12315461 is an apocalyptic number.

It is an amenable number.

12315461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315461 is an equidigital number, since it uses as much as digits as its factorization.

12315461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 12315461 is about 3509.3391115707. The cubic root of 12315461 is about 230.9317027280.

Adding to 12315461 its reverse (16451321), we get a palindrome (28766782).

The spelling of 12315461 in words is "twelve million, three hundred fifteen thousand, four hundred sixty-one".