312421322 has 8 divisors (see below), whose sum is σ = 468709956. Its totient is φ = 156184672.

The previous prime is 312421309. The next prime is 312421327. The reversal of 312421322 is 223124213.

It can be written as a sum of positive squares in 2 ways, for example, as 280261081 + 32160241 = 16741^2 + 5671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 312421294 and 312421303.

It is not an unprimeable number, because it can be changed into a prime (312421327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10598 + ... + 27150.

Almost surely, 2^312421322 is an apocalyptic number.

312421322 is a deficient number, since it is larger than the sum of its proper divisors (156288634).

312421322 is a wasteful number, since it uses less digits than its factorization.

312421322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25992.

The product of its digits is 576, while the sum is 20.

The square root of 312421322 is about 17675.4440396840. Note that the first 3 decimals coincide. The cubic root of 312421322 is about 678.5474487154.

Adding to 312421322 its reverse (223124213), we get a palindrome (535545535).

The spelling of 312421322 in words is "three hundred twelve million, four hundred twenty-one thousand, three hundred twenty-two".