1321413321 has 8 divisors (see below), whose sum is σ = 1762357120. Its totient is φ = 880705872.

The previous prime is 1321413307. The next prime is 1321413323. The reversal of 1321413321 is 1233141231.

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

It is not a de Polignac number, because 1321413321 - 2⁹ = 1321412809 is a prime.

It is a super-2 number, since 2×1321413321² = 3492266329832498082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321413323) 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, 45601 + ... + 68718.

It is an arithmetic number, because the mean of its divisors is an integer number (220294640).

Almost surely, 2^1321413321 is an apocalyptic number.

It is an amenable number.

1321413321 is a deficient number, since it is larger than the sum of its proper divisors (440943799).

1321413321 is a wasteful number, since it uses less digits than its factorization.

1321413321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118175.

The product of its digits is 432, while the sum is 21.

The square root of 1321413321 is about 36351.2492357553. The cubic root of 1321413321 is about 1097.3526755025.

Adding to 1321413321 its reverse (1233141231), we get a palindrome (2554554552).

The spelling of 1321413321 in words is "one billion, three hundred twenty-one million, four hundred thirteen thousand, three hundred twenty-one".