312303322 has 4 divisors (see below), whose sum is σ = 468454986. Its totient is φ = 156151660.

The previous prime is 312303319. The next prime is 312303337. The reversal of 312303322 is 223303213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223303213 = 7 ⋅31900459.

It can be written as a sum of positive squares in only one way, i.e., 310429161 + 1874161 = 17619^2 + 1369^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 312303322.

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, 78075829 + ... + 78075832.

Almost surely, 2^312303322 is an apocalyptic number.

312303322 is a deficient number, since it is larger than the sum of its proper divisors (156151664).

312303322 is a wasteful number, since it uses less digits than its factorization.

312303322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156151663.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 312303322 is about 17672.1057602087. The cubic root of 312303322 is about 678.4620099442.

Adding to 312303322 its reverse (223303213), we get a palindrome (535606535).

The spelling of 312303322 in words is "three hundred twelve million, three hundred three thousand, three hundred twenty-two".