1322365261 has 4 divisors (see below), whose sum is σ = 1511274592. Its totient is φ = 1133455932.

The previous prime is 1322365199. The next prime is 1322365271. The reversal of 1322365261 is 1625632231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1625632231 = 26981 ⋅60251.

It is not a de Polignac number, because 1322365261 - 2¹¹ = 1322363213 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 (1322365271) 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, 94454655 + ... + 94454668.

It is an arithmetic number, because the mean of its divisors is an integer number (377818648).

Almost surely, 2^1322365261 is an apocalyptic number.

It is an amenable number.

1322365261 is a deficient number, since it is larger than the sum of its proper divisors (188909331).

1322365261 is an equidigital number, since it uses as much as digits as its factorization.

1322365261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188909330.

The product of its digits is 12960, while the sum is 31.

The square root of 1322365261 is about 36364.3405137506. The cubic root of 1322365261 is about 1097.6161215025.

Adding to 1322365261 its reverse (1625632231), we get a palindrome (2947997492).

The spelling of 1322365261 in words is "one billion, three hundred twenty-two million, three hundred sixty-five thousand, two hundred sixty-one".