20001307923 has 12 divisors (see below), whose sum is σ = 30411345640. Its totient is φ = 12632404896.

The previous prime is 20001307919. The next prime is 20001307951. The reversal of 20001307923 is 32970310002.

It is not a de Polignac number, because 20001307923 - 2² = 20001307919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001307913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58483186 + ... + 58483527.

Almost surely, 2^20001307923 is an apocalyptic number.

20001307923 is a deficient number, since it is larger than the sum of its proper divisors (10410037717).

20001307923 is a wasteful number, since it uses less digits than its factorization.

20001307923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116966738 (or 116966735 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

Adding to 20001307923 its reverse (32970310002), we get a palindrome (52971617925).

The spelling of 20001307923 in words is "twenty billion, one million, three hundred seven thousand, nine hundred twenty-three".