312412321 has 8 divisors (see below), whose sum is σ = 336581504. Its totient is φ = 288262800.

The previous prime is 312412313. The next prime is 312412363. The reversal of 312412321 is 123214213.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 312412321 - 2³ = 312412313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312412301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57880 + ... + 63046.

It is an arithmetic number, because the mean of its divisors is an integer number (42072688).

Almost surely, 2^312412321 is an apocalyptic number.

It is an amenable number.

312412321 is a deficient number, since it is larger than the sum of its proper divisors (24169183).

312412321 is a wasteful number, since it uses less digits than its factorization.

312412321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9831.

The product of its digits is 288, while the sum is 19.

The square root of 312412321 is about 17675.1894190699. The cubic root of 312412321 is about 678.5409322329.

Adding to 312412321 its reverse (123214213), we get a palindrome (435626534).

The spelling of 312412321 in words is "three hundred twelve million, four hundred twelve thousand, three hundred twenty-one".