1323773307 has 16 divisors (see below), whose sum is σ = 1963971360. Its totient is φ = 881244000.

The previous prime is 1323773299. The next prime is 1323773327. The reversal of 1323773307 is 7033773231.

It is a happy number.

It is not a de Polignac number, because 1323773307 - 2³ = 1323773299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323773327) 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, 16044 + ... + 53897.

It is an arithmetic number, because the mean of its divisors is an integer number (122748210).

Almost surely, 2^1323773307 is an apocalyptic number.

1323773307 is a deficient number, since it is larger than the sum of its proper divisors (640198053).

1323773307 is an equidigital number, since it uses as much as digits as its factorization.

1323773307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70651 (or 70645 counting only the distinct ones).

The product of its (nonzero) digits is 55566, while the sum is 36.

The square root of 1323773307 is about 36383.6956204287. The cubic root of 1323773307 is about 1098.0055614995.

The spelling of 1323773307 in words is "one billion, three hundred twenty-three million, seven hundred seventy-three thousand, three hundred seven".