31438834 has 8 divisors (see below), whose sum is σ = 53895168. Its totient is φ = 13473780.

The previous prime is 31438829. The next prime is 31438843. The reversal of 31438834 is 43883413.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31438834.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122802 + ... + 1122829.

It is an arithmetic number, because the mean of its divisors is an integer number (6736896).

Almost surely, 2^31438834 is an apocalyptic number.

31438834 is a deficient number, since it is larger than the sum of its proper divisors (22456334).

31438834 is a wasteful number, since it uses less digits than its factorization.

31438834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245640.

The product of its digits is 27648, while the sum is 34.

The square root of 31438834 is about 5607.0343319798. The cubic root of 31438834 is about 315.6134313180.

The spelling of 31438834 in words is "thirty-one million, four hundred thirty-eight thousand, eight hundred thirty-four".