1321442311 has 8 divisors (see below), whose sum is σ = 1524882944. Its totient is φ = 1121667480.

The previous prime is 1321442279. The next prime is 1321442321. The reversal of 1321442311 is 1132441231.

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 1321442311 - 2⁵ = 1321442279 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 (1321442321) 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, 915675 + ... + 917116.

It is an arithmetic number, because the mean of its divisors is an integer number (190610368).

Almost surely, 2^1321442311 is an apocalyptic number.

1321442311 is a deficient number, since it is larger than the sum of its proper divisors (203440633).

1321442311 is a wasteful number, since it uses less digits than its factorization.

1321442311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832901.

The product of its digits is 576, while the sum is 22.

The square root of 1321442311 is about 36351.6479819004. The cubic root of 1321442311 is about 1097.3607002492.

Adding to 1321442311 its reverse (1132441231), we get a palindrome (2453883542).

The spelling of 1321442311 in words is "one billion, three hundred twenty-one million, four hundred forty-two thousand, three hundred eleven".