312215052 has 12 divisors (see below), whose sum is σ = 728501816. Its totient is φ = 104071680.

The previous prime is 312215039. The next prime is 312215053. The reversal of 312215052 is 250512213.

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

It is not an unprimeable number, because it can be changed into a prime (312215053) 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, 13008949 + ... + 13008972.

Almost surely, 2^312215052 is an apocalyptic number.

It is an amenable number.

312215052 is an abundant number, since it is smaller than the sum of its proper divisors (416286764).

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

312215052 is a wasteful number, since it uses less digits than its factorization.

312215052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26017928 (or 26017926 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 312215052 is about 17669.6081450608. The cubic root of 312215052 is about 678.3980833270.

Adding to 312215052 its reverse (250512213), we get a palindrome (562727265).

The spelling of 312215052 in words is "three hundred twelve million, two hundred fifteen thousand, fifty-two".