31314212 has 6 divisors (see below), whose sum is σ = 54799878. Its totient is φ = 15657104.

The previous prime is 31314197. The next prime is 31314251. The reversal of 31314212 is 21241313.

It can be written as a sum of positive squares in only one way, i.e., 27290176 + 4024036 = 5224^2 + 2006^2 .

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 as a sum of consecutive naturals, namely, 3914273 + ... + 3914280.

It is an arithmetic number, because the mean of its divisors is an integer number (9133313).

Almost surely, 2^31314212 is an apocalyptic number.

It is an amenable number.

31314212 is a deficient number, since it is larger than the sum of its proper divisors (23485666).

31314212 is a wasteful number, since it uses less digits than its factorization.

31314212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7828557 (or 7828555 counting only the distinct ones).

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

The square root of 31314212 is about 5595.9102923474. The cubic root of 31314212 is about 315.1958536778.

Adding to 31314212 its reverse (21241313), we get a palindrome (52555525).

The spelling of 31314212 in words is "thirty-one million, three hundred fourteen thousand, two hundred twelve".