31231214 has 8 divisors (see below), whose sum is σ = 53539248. Its totient is φ = 13384800.

The previous prime is 31231139. The next prime is 31231223. The reversal of 31231214 is 41213213.

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 = 31231192 and 31231201.

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, 1115387 + ... + 1115414.

It is an arithmetic number, because the mean of its divisors is an integer number (6692406).

Almost surely, 2^31231214 is an apocalyptic number.

31231214 is a deficient number, since it is larger than the sum of its proper divisors (22308034).

31231214 is a wasteful number, since it uses less digits than its factorization.

31231214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230810.

The product of its digits is 144, while the sum is 17.

The square root of 31231214 is about 5588.4894202280. The cubic root of 31231214 is about 314.9171328169.

Adding to 31231214 its reverse (41213213), we get a palindrome (72444427).

The spelling of 31231214 in words is "thirty-one million, two hundred thirty-one thousand, two hundred fourteen".