1321514305 has 4 divisors (see below), whose sum is σ = 1585817172. Its totient is φ = 1057211440.

The previous prime is 1321514287. The next prime is 1321514387. The reversal of 1321514305 is 5034151231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5034151231 = 17 ⋅296126543.

It can be written as a sum of positive squares in 2 ways, for example, as 698862096 + 622652209 = 26436^2 + 24953^2 .

It is not a de Polignac number, because 1321514305 - 2⁷ = 1321514177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321514305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132151426 + ... + 132151435.

It is an arithmetic number, because the mean of its divisors is an integer number (396454293).

Almost surely, 2^1321514305 is an apocalyptic number.

It is an amenable number.

1321514305 is a deficient number, since it is larger than the sum of its proper divisors (264302867).

1321514305 is an equidigital number, since it uses as much as digits as its factorization.

1321514305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264302866.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1321514305 is about 36352.6382123774. The cubic root of 1321514305 is about 1097.3806284622.

Adding to 1321514305 its reverse (5034151231), we get a palindrome (6355665536).

The spelling of 1321514305 in words is "one billion, three hundred twenty-one million, five hundred fourteen thousand, three hundred five".