312321204 has 96 divisors (see below), whose sum is σ = 890749440. Its totient is φ = 94034304.

The previous prime is 312321197. The next prime is 312321211. The reversal of 312321204 is 402123213.

It is an interprime number because it is at equal distance from previous prime (312321197) and next prime (312321211).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63622 + ... + 68354.

It is an arithmetic number, because the mean of its divisors is an integer number (9278640).

Almost surely, 2^312321204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312321204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445374720).

312321204 is an abundant number, since it is smaller than the sum of its proper divisors (578428236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312321204 is a wasteful number, since it uses less digits than its factorization.

312321204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806 (or 4798 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 312321204 is about 17672.6116915412. The cubic root of 312321204 is about 678.4749589218.

Adding to 312321204 its reverse (402123213), we get a palindrome (714444417).

The spelling of 312321204 in words is "three hundred twelve million, three hundred twenty-one thousand, two hundred four".