312403400 has 48 divisors (see below), whose sum is σ = 730617300. Its totient is φ = 124225280.

The previous prime is 312403391. The next prime is 312403423. The reversal of 312403400 is 4304213.

It can be written as a sum of positive squares in 6 ways, for example, as 282307204 + 30096196 = 16802^2 + 5486^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30086 + ... + 39114.

Almost surely, 2^312403400 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 312403400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365308650).

312403400 is an abundant number, since it is smaller than the sum of its proper divisors (418213900).

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

312403400 is a wasteful number, since it uses less digits than its factorization.

312403400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9218 (or 9209 counting only the distinct ones).

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

The square root of 312403400 is about 17674.9370578794. The cubic root of 312403400 is about 678.5344735448.

Adding to 312403400 its reverse (4304213), we get a palindrome (316707613).

The spelling of 312403400 in words is "three hundred twelve million, four hundred three thousand, four hundred".