312243420 has 48 divisors (see below), whose sum is σ = 925712928. Its totient is φ = 78366720.

The previous prime is 312243401. The next prime is 312243457. The reversal of 312243420 is 24342213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152041 + ... + 154080.

It is an arithmetic number, because the mean of its divisors is an integer number (19285686).

Almost surely, 2^312243420 is an apocalyptic number.

312243420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312243420 is an abundant number, since it is smaller than the sum of its proper divisors (613469508).

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

312243420 is a wasteful number, since it uses less digits than its factorization.

312243420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306150 (or 306148 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 312243420 is about 17670.4108610977. The cubic root of 312243420 is about 678.4186292230.

Adding to 312243420 its reverse (24342213), we get a palindrome (336585633).

The spelling of 312243420 in words is "three hundred twelve million, two hundred forty-three thousand, four hundred twenty".