315212212 has 24 divisors (see below), whose sum is σ = 638408960. Its totient is φ = 133380000.

The previous prime is 315212207. The next prime is 315212251. The reversal of 315212212 is 212212513.

It is a self number, because there is not a number n which added to its sum of digits gives 315212212.

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, 69039 + ... + 73462.

Almost surely, 2^315212212 is an apocalyptic number.

It is an amenable number.

315212212 is an abundant number, since it is smaller than the sum of its proper divisors (323196748).

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

315212212 is a wasteful number, since it uses less digits than its factorization.

315212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142591 (or 142589 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 315212212 is about 17754.2167385666. The cubic root of 315212212 is about 680.5619720047.

Adding to 315212212 its reverse (212212513), we get a palindrome (527424725).

It can be divided in two parts, 31521 and 2212, that added together give a palindrome (33733).

The spelling of 315212212 in words is "three hundred fifteen million, two hundred twelve thousand, two hundred twelve".