312000421 has 8 divisors (see below), whose sum is σ = 317828864. Its totient is φ = 306195120.

The previous prime is 312000397. The next prime is 312000433. The reversal of 312000421 is 124000213.

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 312000421 - 2²³ = 303611813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312006421) 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, 22720 + ... + 33766.

It is an arithmetic number, because the mean of its divisors is an integer number (39728608).

Almost surely, 2^312000421 is an apocalyptic number.

It is an amenable number.

312000421 is a deficient number, since it is larger than the sum of its proper divisors (5828443).

312000421 is a wasteful number, since it uses less digits than its factorization.

312000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11571.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 312000421 is about 17663.5336498675. The cubic root of 312000421 is about 678.2425936668.

Adding to 312000421 its reverse (124000213), we get a palindrome (436000634).

The spelling of 312000421 in words is "three hundred twelve million, four hundred twenty-one", and thus it is an aban number.