20323112031 has 32 divisors (see below), whose sum is σ = 30905135040. Its totient is φ = 13194576000.

The previous prime is 20323112027. The next prime is 20323112053. The reversal of 20323112031 is 13021132302.

It is not a de Polignac number, because 20323112031 - 2² = 20323112027 is a prime.

It is a super-2 number, since 2×20323112031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20323111995 and 20323112013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323112011) 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 31 ways as a sum of consecutive naturals, for example, 105261 + ... + 227433.

It is an arithmetic number, because the mean of its divisors is an integer number (965785470).

Almost surely, 2^20323112031 is an apocalyptic number.

20323112031 is a deficient number, since it is larger than the sum of its proper divisors (10582023009).

20323112031 is a wasteful number, since it uses less digits than its factorization.

20323112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122344 (or 122338 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20323112031 its reverse (13021132302), we get a palindrome (33344244333).

The spelling of 20323112031 in words is "twenty billion, three hundred twenty-three million, one hundred twelve thousand, thirty-one".