31828238 has 8 divisors (see below), whose sum is σ = 51414888. Its totient is φ = 14689944.

The previous prime is 31828229. The next prime is 31828243. The reversal of 31828238 is 83282813.

It is a happy number.

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 = 31828198 and 31828207.

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, 612056 + ... + 612107.

It is an arithmetic number, because the mean of its divisors is an integer number (6426861).

Almost surely, 2^31828238 is an apocalyptic number.

31828238 is a deficient number, since it is larger than the sum of its proper divisors (19586650).

31828238 is a wasteful number, since it uses less digits than its factorization.

31828238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224178.

The product of its digits is 18432, while the sum is 35.

The square root of 31828238 is about 5641.6520630042. The cubic root of 31828238 is about 316.9111594131.

The spelling of 31828238 in words is "thirty-one million, eight hundred twenty-eight thousand, two hundred thirty-eight".