20203101231031 has 12 divisors (see below), whose sum is σ = 21847953176280. Its totient is φ = 18658336355120.

The previous prime is 20203101231013. The next prime is 20203101231073. The reversal of 20203101231031 is 13013210130202.

It is not a de Polignac number, because 20203101231031 - 2¹³ = 20203101222839 is a prime.

It is a super-2 number, since 2×20203101231031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203101231631) 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, 658452205 + ... + 658482886.

It is an arithmetic number, because the mean of its divisors is an integer number (1820662764690).

Almost surely, 2^{20203101231031} is an apocalyptic number.

20203101231031 is a deficient number, since it is larger than the sum of its proper divisors (1644851945249).

20203101231031 is a wasteful number, since it uses less digits than its factorization.

20203101231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316935166 (or 1316935143 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20203101231031 its reverse (13013210130202), we get a palindrome (33216311361233).

The spelling of 20203101231031 in words is "twenty trillion, two hundred three billion, one hundred one million, two hundred thirty-one thousand, thirty-one".