1320322231 has 2 divisors, whose sum is σ = 1320322232. Its totient is φ = 1320322230.

The previous prime is 1320322229. The next prime is 1320322253. The reversal of 1320322231 is 1322230231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320322231 - 2¹ = 1320322229 is a prime.

It is a super-2 number, since 2×1320322231² = 3486501587345634722, which contains 22 as substring.

Together with 1320322229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1320322199 and 1320322208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320323231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660161115 + 660161116.

It is an arithmetic number, because the mean of its divisors is an integer number (660161116).

Almost surely, 2^1320322231 is an apocalyptic number.

1320322231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320322231 is an equidigital number, since it uses as much as digits as its factorization.

1320322231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1320322231 is about 36336.2385367556. The cubic root of 1320322231 is about 1097.0505645727.

Adding to 1320322231 its reverse (1322230231), we get a palindrome (2642552462).

The spelling of 1320322231 in words is "one billion, three hundred twenty million, three hundred twenty-two thousand, two hundred thirty-one".