312201322 has 4 divisors (see below), whose sum is σ = 468301986. Its totient is φ = 156100660.

The previous prime is 312201313. The next prime is 312201353. The reversal of 312201322 is 223102213.

312201322 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223102213 = 293 ⋅761441.

It can be written as a sum of positive squares in only one way, i.e., 156725361 + 155475961 = 12519^2 + 12469^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312201296 and 312201305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78050329 + ... + 78050332.

Almost surely, 2^312201322 is an apocalyptic number.

312201322 is a deficient number, since it is larger than the sum of its proper divisors (156100664).

312201322 is a wasteful number, since it uses less digits than its factorization.

312201322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156100663.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 312201322 is about 17669.2196205718. The cubic root of 312201322 is about 678.3881387475.

Adding to 312201322 its reverse (223102213), we get a palindrome (535303535).

The spelling of 312201322 in words is "three hundred twelve million, two hundred one thousand, three hundred twenty-two".