31212214 has 16 divisors (see below), whose sum is σ = 51302160. Its totient is φ = 14124160.

The previous prime is 31212197. The next prime is 31212227. The reversal of 31212214 is 41221213.

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 7 ways as a sum of consecutive naturals, for example, 2082 + ... + 8170.

It is an arithmetic number, because the mean of its divisors is an integer number (3206385).

Almost surely, 2^31212214 is an apocalyptic number.

31212214 is a deficient number, since it is larger than the sum of its proper divisors (20089946).

31212214 is a wasteful number, since it uses less digits than its factorization.

31212214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335.

The product of its digits is 96, while the sum is 16.

The square root of 31212214 is about 5586.7892389099. The cubic root of 31212214 is about 314.8532582660.

Adding to 31212214 its reverse (41221213), we get a palindrome (72433427).

It can be divided in two parts, 3121 and 2214, that added together give a palindrome (5335).

The spelling of 31212214 in words is "thirty-one million, two hundred twelve thousand, two hundred fourteen".