20312203329 has 64 divisors (see below), whose sum is σ = 33207033600. Its totient is φ = 12270329280.

The previous prime is 20312203291. The next prime is 20312203393. The reversal of 20312203329 is 92330221302.

20312203329 is a `hidden beast` number, since 2 + 0 + 312 + 20 + 3 + 329 = 666.

It is not a de Polignac number, because 20312203329 - 2⁹ = 20312202817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20312203399) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13978767 + ... + 13980219.

It is an arithmetic number, because the mean of its divisors is an integer number (518859900).

Almost surely, 2^20312203329 is an apocalyptic number.

It is an amenable number.

20312203329 is a deficient number, since it is larger than the sum of its proper divisors (12894830271).

20312203329 is a wasteful number, since it uses less digits than its factorization.

20312203329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884 (or 1856 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The spelling of 20312203329 in words is "twenty billion, three hundred twelve million, two hundred three thousand, three hundred twenty-nine".