1315481 has 2 divisors, whose sum is σ = 1315482. Its totient is φ = 1315480.

The previous prime is 1315463. The next prime is 1315487. The reversal of 1315481 is 1845131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737881 + 577600 = 859^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315481 - 2¹⁴ = 1299097 is a prime.

It is a super-2 number, since 2×1315481² = 3460980522722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1315487) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657740 + 657741.

It is an arithmetic number, because the mean of its divisors is an integer number (657741).

2^1315481 is an apocalyptic number.

It is an amenable number.

1315481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315481 is an equidigital number, since it uses as much as digits as its factorization.

1315481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 1315481 is about 1146.9442009095. The cubic root of 1315481 is about 109.5708069104.

The spelling of 1315481 in words is "one million, three hundred fifteen thousand, four hundred eighty-one".