1323044397 has 12 divisors (see below), whose sum is σ = 2023479900. Its totient is φ = 830145408.

The previous prime is 1323044369. The next prime is 1323044399. The reversal of 1323044397 is 7934403231.

It can be written as a sum of positive squares in 2 ways, for example, as 1202286276 + 120758121 = 34674^2 + 10989^2 .

It is not a de Polignac number, because 1323044397 - 2⁷ = 1323044269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323044399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4323522 + ... + 4323827.

It is an arithmetic number, because the mean of its divisors is an integer number (168623325).

Almost surely, 2^1323044397 is an apocalyptic number.

1323044397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1323044397 is a deficient number, since it is larger than the sum of its proper divisors (700435503).

1323044397 is a wasteful number, since it uses less digits than its factorization.

1323044397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8647372 (or 8647369 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 1323044397 is about 36373.6772543003. The cubic root of 1323044397 is about 1097.8039927029.

The spelling of 1323044397 in words is "one billion, three hundred twenty-three million, forty-four thousand, three hundred ninety-seven".