312220203009 has 16 divisors (see below), whose sum is σ = 489072206784. Its totient is φ = 174668644800.

The previous prime is 312220203007. The next prime is 312220203047. The reversal of 312220203009 is 900302022213.

It is not a de Polignac number, because 312220203009 - 2¹ = 312220203007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312220203009.

It is not an unprimeable number, because it can be changed into a prime (312220203007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363892582 + ... + 363893439.

It is an arithmetic number, because the mean of its divisors is an integer number (30567012924).

Almost surely, 2^312220203009 is an apocalyptic number.

312220203009 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

312220203009 is a deficient number, since it is larger than the sum of its proper divisors (176852003775).

312220203009 is a wasteful number, since it uses less digits than its factorization.

312220203009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727786048.

The product of its (nonzero) digits is 1296, while the sum is 24.

The spelling of 312220203009 in words is "three hundred twelve billion, two hundred twenty million, two hundred three thousand, nine".