312043322 has 4 divisors (see below), whose sum is σ = 468064986. Its totient is φ = 156021660.

The previous prime is 312043301. The next prime is 312043337. The reversal of 312043322 is 223340213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223340213 = 31 ⋅7204523.

It can be written as a sum of positive squares in only one way, i.e., 191241241 + 120802081 = 13829^2 + 10991^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312043294 and 312043303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78010829 + ... + 78010832.

Almost surely, 2^312043322 is an apocalyptic number.

312043322 is a deficient number, since it is larger than the sum of its proper divisors (156021664).

312043322 is a wasteful number, since it uses less digits than its factorization.

312043322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156021663.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 312043322 is about 17664.7480027313. The cubic root of 312043322 is about 678.2736790436.

Adding to 312043322 its reverse (223340213), we get a palindrome (535383535).

The spelling of 312043322 in words is "three hundred twelve million, forty-three thousand, three hundred twenty-two".