312030020 has 24 divisors (see below), whose sum is σ = 655638144. Its totient is φ = 124740576.

The previous prime is 312030007. The next prime is 312030031. The reversal of 312030020 is 20030213.

It is a junction number, because it is equal to n+sod(n) for n = 312029983 and 312030010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44387 + ... + 50933.

It is an arithmetic number, because the mean of its divisors is an integer number (27318256).

Almost surely, 2^312030020 is an apocalyptic number.

It is an amenable number.

312030020 is an abundant number, since it is smaller than the sum of its proper divisors (343608124).

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

312030020 is a wasteful number, since it uses less digits than its factorization.

312030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8939 (or 8937 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 312030020 is about 17664.3714861299. The cubic root of 312030020 is about 678.2640409324.

Adding to 312030020 its reverse (20030213), we get a palindrome (332060233).

The spelling of 312030020 in words is "three hundred twelve million, thirty thousand, twenty".