1316281405 has 4 divisors (see below), whose sum is σ = 1579537692. Its totient is φ = 1053025120.

The previous prime is 1316281403. The next prime is 1316281433. The reversal of 1316281405 is 5041826131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 748460164 + 567821241 = 27358^2 + 23829^2 .

It is not a de Polignac number, because 1316281405 - 2¹ = 1316281403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316281403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131628136 + ... + 131628145.

It is an arithmetic number, because the mean of its divisors is an integer number (394884423).

Almost surely, 2^1316281405 is an apocalyptic number.

It is an amenable number.

1316281405 is a deficient number, since it is larger than the sum of its proper divisors (263256287).

1316281405 is an equidigital number, since it uses as much as digits as its factorization.

1316281405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263256286.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1316281405 is about 36280.5926770774. The cubic root of 1316281405 is about 1095.9302520682.

The spelling of 1316281405 in words is "one billion, three hundred sixteen million, two hundred eighty-one thousand, four hundred five".