20123330031 has 24 divisors (see below), whose sum is σ = 33223382400. Its totient is φ = 11497689936.

The previous prime is 20123330011. The next prime is 20123330033. The reversal of 20123330031 is 13003332102.

It is not a de Polignac number, because 20123330031 - 2⁹ = 20123329519 is a prime.

It is a super-2 number, since 2×20123330031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20123329986 and 20123330013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123330033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 800256 + ... + 825018.

It is an arithmetic number, because the mean of its divisors is an integer number (1384307600).

Almost surely, 2^20123330031 is an apocalyptic number.

20123330031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20123330031 is a deficient number, since it is larger than the sum of its proper divisors (13100052369).

20123330031 is a wasteful number, since it uses less digits than its factorization.

20123330031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37675 (or 37672 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20123330031 its reverse (13003332102), we get a palindrome (33126662133).

The spelling of 20123330031 in words is "twenty billion, one hundred twenty-three million, three hundred thirty thousand, thirty-one".