20213231329 has 8 divisors (see below), whose sum is σ = 20500845120. Its totient is φ = 19925698800.

The previous prime is 20213231317. The next prime is 20213231347. The reversal of 20213231329 is 92313231202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20213231329 - 2¹³ = 20213223137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20213231297 and 20213231306.

It is not an unprimeable number, because it can be changed into a prime (20213231369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625294 + ... + 656824.

It is an arithmetic number, because the mean of its divisors is an integer number (2562605640).

Almost surely, 2^20213231329 is an apocalyptic number.

It is an amenable number.

20213231329 is a deficient number, since it is larger than the sum of its proper divisors (287613791).

20213231329 is an equidigital number, since it uses as much as digits as its factorization.

20213231329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40631.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 20213231329 in words is "twenty billion, two hundred thirteen million, two hundred thirty-one thousand, three hundred twenty-nine".