312303012212 has 12 divisors (see below), whose sum is σ = 547216011300. Its totient is φ = 155955580416.

The previous prime is 312303012193. The next prime is 312303012221. The reversal of 312303012212 is 212210303213.

It can be written as a sum of positive squares in 2 ways, for example, as 125433555556 + 186869456656 = 354166^2 + 432284^2 .

It is a super-2 number, since 2×312303012212² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48977837 + ... + 48984212.

It is an arithmetic number, because the mean of its divisors is an integer number (45601334275).

Almost surely, 2^312303012212 is an apocalyptic number.

It is an amenable number.

312303012212 is a deficient number, since it is larger than the sum of its proper divisors (234912999088).

312303012212 is a wasteful number, since it uses less digits than its factorization.

312303012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97962850 (or 97962848 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312303012212 its reverse (212210303213), we get a palindrome (524513315425).

The spelling of 312303012212 in words is "three hundred twelve billion, three hundred three million, twelve thousand, two hundred twelve".