20323011329 has 4 divisors (see below), whose sum is σ = 20457600960. Its totient is φ = 20188421700.

The previous prime is 20323011307. The next prime is 20323011337. The reversal of 20323011329 is 92311032302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92311032302 = 2 ⋅46155516151.

It is a cyclic number.

It is not a de Polignac number, because 20323011329 - 2¹⁶ = 20322945793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323011298 and 20323011307.

It is not an unprimeable number, because it can be changed into a prime (20323011229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67294589 + ... + 67294890.

It is an arithmetic number, because the mean of its divisors is an integer number (5114400240).

Almost surely, 2^20323011329 is an apocalyptic number.

It is an amenable number.

20323011329 is a deficient number, since it is larger than the sum of its proper divisors (134589631).

20323011329 is a wasteful number, since it uses less digits than its factorization.

20323011329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134589630.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 20323011329 in words is "twenty billion, three hundred twenty-three million, eleven thousand, three hundred twenty-nine".