312003242 has 4 divisors (see below), whose sum is σ = 468004866. Its totient is φ = 156001620.

The previous prime is 312003239. The next prime is 312003247. The reversal of 312003242 is 242300213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 156975841 + 155027401 = 12529^2 + 12451^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 312003242.

It is not an unprimeable number, because it can be changed into a prime (312003247) by changing a digit.

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 as a sum of consecutive naturals, namely, 78000809 + ... + 78000812.

Almost surely, 2^312003242 is an apocalyptic number.

312003242 is a deficient number, since it is larger than the sum of its proper divisors (156001624).

312003242 is a wasteful number, since it uses less digits than its factorization.

312003242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156001623.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 312003242 is about 17663.6135034709. The cubic root of 312003242 is about 678.2446378057.

Adding to 312003242 its reverse (242300213), we get a palindrome (554303455).

The spelling of 312003242 in words is "three hundred twelve million, three thousand, two hundred forty-two".