31480212 has 12 divisors (see below), whose sum is σ = 73453856. Its totient is φ = 10493400.

The previous prime is 31480201. The next prime is 31480259. The reversal of 31480212 is 21208413.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311664 + ... + 1311687.

Almost surely, 2^31480212 is an apocalyptic number.

It is an amenable number.

31480212 is an abundant number, since it is smaller than the sum of its proper divisors (41973644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31480212 is a wasteful number, since it uses less digits than its factorization.

31480212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623358 (or 2623356 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 31480212 is about 5610.7229480701. The cubic root of 31480212 is about 315.7518347479.

Adding to 31480212 its reverse (21208413), we get a palindrome (52688625).

The spelling of 31480212 in words is "thirty-one million, four hundred eighty thousand, two hundred twelve".