312236242 has 4 divisors (see below), whose sum is σ = 468354366. Its totient is φ = 156118120.

The previous prime is 312236237. The next prime is 312236269. The reversal of 312236242 is 242632213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242632213 = 1951 ⋅124363.

It can be written as a sum of positive squares in only one way, i.e., 305165961 + 7070281 = 17469^2 + 2659^2 .

It is an unprimeable number.

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, 78059059 + ... + 78059062.

Almost surely, 2^312236242 is an apocalyptic number.

312236242 is a deficient number, since it is larger than the sum of its proper divisors (156118124).

312236242 is a wasteful number, since it uses less digits than its factorization.

312236242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156118123.

The product of its digits is 3456, while the sum is 25.

The square root of 312236242 is about 17670.2077520328. The cubic root of 312236242 is about 678.4134305800.

Adding to 312236242 its reverse (242632213), we get a palindrome (554868455).

The spelling of 312236242 in words is "three hundred twelve million, two hundred thirty-six thousand, two hundred forty-two".