31470212 has 12 divisors (see below), whose sum is σ = 55438656. Its totient is φ = 15630600.

The previous prime is 31470209. The next prime is 31470217. The reversal of 31470212 is 21207413.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a pancake number, because a pancake can be divided into 31470212 parts by 7933 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (31470217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25448 + ... + 26655.

It is an arithmetic number, because the mean of its divisors is an integer number (4619888).

Almost surely, 2^31470212 is an apocalyptic number.

It is an amenable number.

31470212 is a deficient number, since it is larger than the sum of its proper divisors (23968444).

31470212 is a wasteful number, since it uses less digits than its factorization.

31470212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52258 (or 52256 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 31470212 is about 5609.8317265316. The cubic root of 31470212 is about 315.7183973117.

Adding to 31470212 its reverse (21207413), we get a palindrome (52677625).

The spelling of 31470212 in words is "thirty-one million, four hundred seventy thousand, two hundred twelve".