512311400 has 48 divisors (see below), whose sum is σ = 1220195340. Its totient is φ = 199923200.

The previous prime is 512311381. The next prime is 512311427. The reversal of 512311400 is 4113215.

It can be written as a sum of positive squares in 6 ways, for example, as 17960644 + 494350756 = 4238^2 + 22234^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23039 + ... + 39438.

Almost surely, 2^512311400 is an apocalyptic number.

512311400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

512311400 is an abundant number, since it is smaller than the sum of its proper divisors (707883940).

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

512311400 is a wasteful number, since it uses less digits than its factorization.

512311400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62534 (or 62525 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 512311400 is about 22634.2969848856. The cubic root of 512311400 is about 800.1621546301.

Adding to 512311400 its reverse (4113215), we get a palindrome (516424615).

The spelling of 512311400 in words is "five hundred twelve million, three hundred eleven thousand, four hundred".