1238440323 has 8 divisors (see below), whose sum is σ = 1651416336. Its totient is φ = 825545600.

The previous prime is 1238440279. The next prime is 1238440351. The reversal of 1238440323 is 3230448321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1238440323 - 2¹⁰ = 1238439299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1238440823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49543 + ... + 70223.

It is an arithmetic number, because the mean of its divisors is an integer number (206427042).

Almost surely, 2^1238440323 is an apocalyptic number.

1238440323 is a deficient number, since it is larger than the sum of its proper divisors (412976013).

1238440323 is a wasteful number, since it uses less digits than its factorization.

1238440323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40645.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1238440323 is about 35191.4808298827. The cubic root of 1238440323 is about 1073.8864468372.

Adding to 1238440323 its reverse (3230448321), we get a palindrome (4468888644).

The spelling of 1238440323 in words is "one billion, two hundred thirty-eight million, four hundred forty thousand, three hundred twenty-three".