312031300202 has 4 divisors (see below), whose sum is σ = 468046950306. Its totient is φ = 156015650100.

The previous prime is 312031300193. The next prime is 312031300291. The reversal of 312031300202 is 202003130213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202003130213 = 10103 ⋅19994371.

It can be written as a sum of positive squares in only one way, i.e., 309493055041 + 2538245161 = 556321^2 + 50381^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78007825049 + ... + 78007825052.

Almost surely, 2^312031300202 is an apocalyptic number.

312031300202 is a deficient number, since it is larger than the sum of its proper divisors (156015650104).

312031300202 is a wasteful number, since it uses less digits than its factorization.

312031300202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156015650103.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 312031300202 its reverse (202003130213), we get a palindrome (514034430415).

The spelling of 312031300202 in words is "three hundred twelve billion, thirty-one million, three hundred thousand, two hundred two".