312030540 has 72 divisors (see below), whose sum is σ = 996318960. Its totient is φ = 78827904.

The previous prime is 312030533. The next prime is 312030553. The reversal of 312030540 is 45030213.

312030540 is a `hidden beast` number, since 3 + 120 + 3 + 0 + 540 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42199 + ... + 49038.

Almost surely, 2^312030540 is an apocalyptic number.

312030540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312030540 is an abundant number, since it is smaller than the sum of its proper divisors (684288420).

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

312030540 is a wasteful number, since it uses less digits than its factorization.

312030540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91271 (or 91266 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 312030540 is about 17664.3862050171. The cubic root of 312030540 is about 678.2644177093.

Adding to 312030540 its reverse (45030213), we get a palindrome (357060753).

The spelling of 312030540 in words is "three hundred twelve million, thirty thousand, five hundred forty".