20003123331 has 6 divisors (see below), whose sum is σ = 28893400380. Its totient is φ = 13335415548.

The previous prime is 20003123323. The next prime is 20003123359. The reversal of 20003123331 is 13332130002.

20003123331 is a `hidden beast` number, since 20 + 0 + 0 + 312 + 3 + 331 = 666.

It is not a de Polignac number, because 20003123331 - 2³ = 20003123323 is a prime.

It is a super-2 number, since 2×20003123331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20003123311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111284621 + ... + 1111284638.

It is an arithmetic number, because the mean of its divisors is an integer number (4815566730).

Almost surely, 2^20003123331 is an apocalyptic number.

20003123331 is a deficient number, since it is larger than the sum of its proper divisors (8890277049).

20003123331 is a wasteful number, since it uses less digits than its factorization.

20003123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222569265 (or 2222569262 counting only the distinct ones).

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

Adding to 20003123331 its reverse (13332130002), we get a palindrome (33335253333).

The spelling of 20003123331 in words is "twenty billion, three million, one hundred twenty-three thousand, three hundred thirty-one".