1231438382 has 8 divisors (see below), whose sum is σ = 1852391376. Its totient is φ = 613974592.

The previous prime is 1231438357. The next prime is 1231438421. The reversal of 1231438382 is 2838341321.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 871418 + ... + 872829.

It is an arithmetic number, because the mean of its divisors is an integer number (231548922).

Almost surely, 2^1231438382 is an apocalyptic number.

1231438382 is a deficient number, since it is larger than the sum of its proper divisors (620952994).

1231438382 is a wasteful number, since it uses less digits than its factorization.

1231438382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744602.

The product of its digits is 27648, while the sum is 35.

The square root of 1231438382 is about 35091.8563487314. The cubic root of 1231438382 is about 1071.8587606070.

The spelling of 1231438382 in words is "one billion, two hundred thirty-one million, four hundred thirty-eight thousand, three hundred eighty-two".