123131020203 has 24 divisors (see below), whose sum is σ = 178265680320. Its totient is φ = 81898354800.

The previous prime is 123131020193. The next prime is 123131020219. The reversal of 123131020203 is 302020131321.

It is not a de Polignac number, because 123131020203 - 2¹⁴ = 123131003819 is a prime.

It is a super-2 number, since 2×123131020203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123131020223) 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, 23772468 + ... + 23777646.

It is an arithmetic number, because the mean of its divisors is an integer number (7427736680).

Almost surely, 2^123131020203 is an apocalyptic number.

123131020203 is a deficient number, since it is larger than the sum of its proper divisors (55134660117).

123131020203 is a wasteful number, since it uses less digits than its factorization.

123131020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10759 (or 10756 counting only the distinct ones).

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

Adding to 123131020203 its reverse (302020131321), we get a palindrome (425151151524).

The spelling of 123131020203 in words is "one hundred twenty-three billion, one hundred thirty-one million, twenty thousand, two hundred three".