1323227643 has 16 divisors (see below), whose sum is σ = 1797649920. Its totient is φ = 865616544.

The previous prime is 1323227579. The next prime is 1323227663. The reversal of 1323227643 is 3467223231.

It is not a de Polignac number, because 1323227643 - 2⁶ = 1323227579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323227663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21505 + ... + 55757.

It is an arithmetic number, because the mean of its divisors is an integer number (112353120).

Almost surely, 2^1323227643 is an apocalyptic number.

1323227643 is a deficient number, since it is larger than the sum of its proper divisors (474422277).

1323227643 is a wasteful number, since it uses less digits than its factorization.

1323227643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34498.

The product of its digits is 36288, while the sum is 33.

The square root of 1323227643 is about 36376.1961040458. The cubic root of 1323227643 is about 1097.8546735176.

The spelling of 1323227643 in words is "one billion, three hundred twenty-three million, two hundred twenty-seven thousand, six hundred forty-three".