312423421 has 4 divisors (see below), whose sum is σ = 326007072. Its totient is φ = 298839772.

The previous prime is 312423407. The next prime is 312423427. The reversal of 312423421 is 124324213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312423421 - 2¹⁵ = 312390653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312423392 and 312423401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312423427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6791791 + ... + 6791836.

It is an arithmetic number, because the mean of its divisors is an integer number (81501768).

Almost surely, 2^312423421 is an apocalyptic number.

It is an amenable number.

312423421 is a deficient number, since it is larger than the sum of its proper divisors (13583651).

312423421 is a wasteful number, since it uses less digits than its factorization.

312423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13583650.

The product of its digits is 1152, while the sum is 22.

The square root of 312423421 is about 17675.5034157446. The cubic root of 312423421 is about 678.5489683171.

Adding to 312423421 its reverse (124324213), we get a palindrome (436747634).

The spelling of 312423421 in words is "three hundred twelve million, four hundred twenty-three thousand, four hundred twenty-one".