312423321 has 32 divisors (see below), whose sum is σ = 492307200. Its totient is φ = 172523520.

The previous prime is 312423317. The next prime is 312423361. The reversal of 312423321 is 123324213.

It is not a de Polignac number, because 312423321 - 2² = 312423317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (312423311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92185 + ... + 95513.

It is an arithmetic number, because the mean of its divisors is an integer number (15384600).

Almost surely, 2^312423321 is an apocalyptic number.

It is an amenable number.

312423321 is a deficient number, since it is larger than the sum of its proper divisors (179883879).

312423321 is a wasteful number, since it uses less digits than its factorization.

312423321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489.

The product of its digits is 864, while the sum is 21.

The square root of 312423321 is about 17675.5005869707. The cubic root of 312423321 is about 678.5488959208.

Adding to 312423321 its reverse (123324213), we get a palindrome (435747534).

The spelling of 312423321 in words is "three hundred twelve million, four hundred twenty-three thousand, three hundred twenty-one".