31285342 has 8 divisors (see below), whose sum is σ = 51194232. Its totient is φ = 14220600.

The previous prime is 31285333. The next prime is 31285357. The reversal of 31285342 is 24358213.

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 31285342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711009 + ... + 711052.

It is an arithmetic number, because the mean of its divisors is an integer number (6399279).

Almost surely, 2^31285342 is an apocalyptic number.

31285342 is a deficient number, since it is larger than the sum of its proper divisors (19908890).

31285342 is a wasteful number, since it uses less digits than its factorization.

31285342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422074.

The product of its digits is 5760, while the sum is 28.

The square root of 31285342 is about 5593.3301350805. The cubic root of 31285342 is about 315.0989594177.

The spelling of 31285342 in words is "thirty-one million, two hundred eighty-five thousand, three hundred forty-two".