31285214 has 8 divisors (see below), whose sum is σ = 48072528. Its totient is φ = 15261040.

The previous prime is 31285213. The next prime is 31285217. The reversal of 31285214 is 41258213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31285213) by changing a digit.

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, 190682 + ... + 190845.

It is an arithmetic number, because the mean of its divisors is an integer number (6009066).

Almost surely, 2^31285214 is an apocalyptic number.

31285214 is a deficient number, since it is larger than the sum of its proper divisors (16787314).

31285214 is a wasteful number, since it uses less digits than its factorization.

31285214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381570.

The product of its digits is 1920, while the sum is 26.

The square root of 31285214 is about 5593.3186928692. The cubic root of 31285214 is about 315.0985296880.

The spelling of 31285214 in words is "thirty-one million, two hundred eighty-five thousand, two hundred fourteen".