312040430 has 16 divisors (see below), whose sum is σ = 604878624. Its totient is φ = 115214880.

The previous prime is 312040427. The next prime is 312040447. The reversal of 312040430 is 34040213.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312040399 and 312040408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200026 + ... + 1200285.

It is an arithmetic number, because the mean of its divisors is an integer number (37804914).

Almost surely, 2^312040430 is an apocalyptic number.

312040430 is a deficient number, since it is larger than the sum of its proper divisors (292838194).

312040430 is a wasteful number, since it uses less digits than its factorization.

312040430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400331.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 312040430 is about 17664.6661445950. Note that the first 3 decimals coincide. The cubic root of 312040430 is about 678.2715836363.

Adding to 312040430 its reverse (34040213), we get a palindrome (346080643).

The spelling of 312040430 in words is "three hundred twelve million, forty thousand, four hundred thirty".