312620020 has 12 divisors (see below), whose sum is σ = 656502084. Its totient is φ = 125048000.

The previous prime is 312619991. The next prime is 312620051. The reversal of 312620020 is 20026213.

It can be written as a sum of positive squares in 2 ways, for example, as 88698724 + 223921296 = 9418^2 + 14964^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312619976 and 312620003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7815481 + ... + 7815520.

It is an arithmetic number, because the mean of its divisors is an integer number (54708507).

Almost surely, 2^312620020 is an apocalyptic number.

It is an amenable number.

312620020 is an abundant number, since it is smaller than the sum of its proper divisors (343882064).

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

312620020 is a wasteful number, since it uses less digits than its factorization.

312620020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15631010 (or 15631008 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 312620020 is about 17681.0638820180. The cubic root of 312620020 is about 678.6912688698.

Adding to 312620020 its reverse (20026213), we get a palindrome (332646233).

The spelling of 312620020 in words is "three hundred twelve million, six hundred twenty thousand, twenty".