1326103261 has 8 divisors (see below), whose sum is σ = 1547792640. Its totient is φ = 1112475408.

The previous prime is 1326103253. The next prime is 1326103283. The reversal of 1326103261 is 1623016231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1326103261 - 2³ = 1326103253 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 (1726103261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015026 + ... + 2015683.

It is an arithmetic number, because the mean of its divisors is an integer number (193474080).

Almost surely, 2^1326103261 is an apocalyptic number.

It is an amenable number.

1326103261 is a deficient number, since it is larger than the sum of its proper divisors (221689379).

1326103261 is an equidigital number, since it uses as much as digits as its factorization.

1326103261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030763.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1326103261 is about 36415.7007484409. The cubic root of 1326103261 is about 1098.6493784227.

Adding to 1326103261 its reverse (1623016231), we get a palindrome (2949119492).

The spelling of 1326103261 in words is "one billion, three hundred twenty-six million, one hundred three thousand, two hundred sixty-one".