123003131031 has 24 divisors (see below), whose sum is σ = 197000553360. Its totient is φ = 73325260800.

The previous prime is 123003131023. The next prime is 123003131051. The reversal of 123003131031 is 130131300321.

It is a happy number.

123003131031 is a `hidden beast` number, since 12 + 300 + 313 + 10 + 31 = 666.

It is not a de Polignac number, because 123003131031 - 2³ = 123003131023 is a prime.

It is a super-2 number, since 2×123003131031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123003130995 and 123003131013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123003131011) 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, 10178026 + ... + 10190103.

It is an arithmetic number, because the mean of its divisors is an integer number (8208356390).

Almost surely, 2^123003131031 is an apocalyptic number.

123003131031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123003131031 is a deficient number, since it is larger than the sum of its proper divisors (73997422329).

123003131031 is a wasteful number, since it uses less digits than its factorization.

123003131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20368207 (or 20368204 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 123003131031 its reverse (130131300321), we get a palindrome (253134431352).

The spelling of 123003131031 in words is "one hundred twenty-three billion, three million, one hundred thirty-one thousand, thirty-one".