1323913237 has 4 divisors (see below), whose sum is σ = 1336059340. Its totient is φ = 1311767136.

The previous prime is 1323913211. The next prime is 1323913273. The reversal of 1323913237 is 7323193231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1096536996 + 227376241 = 33114^2 + 15079^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323913237 - 2¹¹ = 1323911189 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 (1323913637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6072888 + ... + 6073105.

It is an arithmetic number, because the mean of its divisors is an integer number (334014835).

Almost surely, 2^1323913237 is an apocalyptic number.

It is an amenable number.

1323913237 is a deficient number, since it is larger than the sum of its proper divisors (12146103).

1323913237 is a wasteful number, since it uses less digits than its factorization.

1323913237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12146102.

The product of its digits is 20412, while the sum is 34.

The square root of 1323913237 is about 36385.6185463433. The cubic root of 1323913237 is about 1098.0442485124.

The spelling of 1323913237 in words is "one billion, three hundred twenty-three million, nine hundred thirteen thousand, two hundred thirty-seven".