20032003231031 has 12 divisors (see below), whose sum is σ = 22020650792616. Its totient is φ = 18209255731920.

The previous prime is 20032003231007. The next prime is 20032003231091. The reversal of 20032003231031 is 13013230023002.

It is a de Polignac number, because none of the positive numbers 2^k-20032003231031 is a prime.

It is a super-2 number, since 2×20032003231031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20032003230994 and 20032003231012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032003231091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6191756 + ... + 8854481.

It is an arithmetic number, because the mean of its divisors is an integer number (1835054232718).

Almost surely, 2^{20032003231031} is an apocalyptic number.

20032003231031 is a deficient number, since it is larger than the sum of its proper divisors (1988647561585).

20032003231031 is a wasteful number, since it uses less digits than its factorization.

20032003231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15057262 (or 15057251 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20032003231031 its reverse (13013230023002), we get a palindrome (33045233254033).

The spelling of 20032003231031 in words is "twenty trillion, thirty-two billion, three million, two hundred thirty-one thousand, thirty-one".