1345300321 has 4 divisors (see below), whose sum is σ = 1424435652. Its totient is φ = 1266164992.

The previous prime is 1345300309. The next prime is 1345300331. The reversal of 1345300321 is 1230035431.

1345300321 = 25935² + 25936².

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 672624225 + 672676096 = 25935^2 + 25936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345300321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345300292 and 1345300301.

It is not an unprimeable number, because it can be changed into a prime (1345300331) 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, 39567640 + ... + 39567673.

It is an arithmetic number, because the mean of its divisors is an integer number (356108913).

Almost surely, 2^1345300321 is an apocalyptic number.

1345300321 is the 25936-th centered square number.

It is an amenable number.

1345300321 is a deficient number, since it is larger than the sum of its proper divisors (79135331).

1345300321 is an equidigital number, since it uses as much as digits as its factorization.

1345300321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79135330.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1345300321 is about 36678.3358537434. The cubic root of 1345300321 is about 1103.9254573282.

Adding to 1345300321 its reverse (1230035431), we get a palindrome (2575335752).

The spelling of 1345300321 in words is "one billion, three hundred forty-five million, three hundred thousand, three hundred twenty-one".