231812738 has 8 divisors (see below), whose sum is σ = 348072960. Its totient is φ = 115788420.

The previous prime is 231812717. The next prime is 231812767. The reversal of 231812738 is 837218132.

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

It is a junction number, because it is equal to n+sod(n) for n = 231812698 and 231812707.

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, 56498 + ... + 60461.

It is an arithmetic number, because the mean of its divisors is an integer number (43509120).

Almost surely, 2^231812738 is an apocalyptic number.

231812738 is a deficient number, since it is larger than the sum of its proper divisors (116260222).

231812738 is a wasteful number, since it uses less digits than its factorization.

231812738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117952.

The product of its digits is 16128, while the sum is 35.

The square root of 231812738 is about 15225.3977944749. The cubic root of 231812738 is about 614.2979964425.

The spelling of 231812738 in words is "two hundred thirty-one million, eight hundred twelve thousand, seven hundred thirty-eight".