312740212 has 12 divisors (see below), whose sum is σ = 547498756. Its totient is φ = 156312000.

The previous prime is 312740201. The next prime is 312740213. The reversal of 312740212 is 212047213.

It can be written as a sum of positive squares in 2 ways, for example, as 218921616 + 93818596 = 14796^2 + 9686^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312740213) by changing a digit.

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, 1023 + ... + 25030.

Almost surely, 2^312740212 is an apocalyptic number.

It is an amenable number.

312740212 is a deficient number, since it is larger than the sum of its proper divisors (234758544).

312740212 is a wasteful number, since it uses less digits than its factorization.

312740212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29058 (or 29056 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 312740212 is about 17684.4624458874. The cubic root of 312740212 is about 678.7782357987.

Adding to 312740212 its reverse (212047213), we get a palindrome (524787425).

The spelling of 312740212 in words is "three hundred twelve million, seven hundred forty thousand, two hundred twelve".