20323011309 has 16 divisors (see below), whose sum is σ = 27531268800. Its totient is φ = 13332147840.

The previous prime is 20323011307. The next prime is 20323011337. The reversal of 20323011309 is 90311032302.

It is not a de Polignac number, because 20323011309 - 2¹ = 20323011307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323011307) 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 15 ways as a sum of consecutive naturals, for example, 135417 + ... + 242865.

It is an arithmetic number, because the mean of its divisors is an integer number (1720704300).

Almost surely, 2^20323011309 is an apocalyptic number.

It is an amenable number.

20323011309 is a deficient number, since it is larger than the sum of its proper divisors (7208257491).

20323011309 is a wasteful number, since it uses less digits than its factorization.

20323011309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108460.

The product of its (nonzero) digits is 972, while the sum is 24.

The spelling of 20323011309 in words is "twenty billion, three hundred twenty-three million, eleven thousand, three hundred nine".