312022020009 has 32 divisors (see below), whose sum is σ = 496494710784. Its totient is φ = 170422338240.

The previous prime is 312022019993. The next prime is 312022020061. The reversal of 312022020009 is 900020220213.

It is not a de Polignac number, because 312022020009 - 2⁴ = 312022019993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (312022020209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 433132 + ... + 900914.

It is an arithmetic number, because the mean of its divisors is an integer number (15515459712).

Almost surely, 2^312022020009 is an apocalyptic number.

It is an amenable number.

312022020009 is a deficient number, since it is larger than the sum of its proper divisors (184472690775).

312022020009 is a wasteful number, since it uses less digits than its factorization.

312022020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469197.

The product of its (nonzero) digits is 432, while the sum is 21.

The spelling of 312022020009 in words is "three hundred twelve billion, twenty-two million, twenty thousand, nine".