123131031003 has 12 divisors (see below), whose sum is σ = 177861630960. Its totient is φ = 82084724496.

The previous prime is 123131030987. The next prime is 123131031017. The reversal of 123131031003 is 300130131321.

It is a happy number.

123131031003 is a `hidden beast` number, since 12 + 31 + 310 + 310 + 0 + 3 = 666.

It is not a de Polignac number, because 123131031003 - 2⁴ = 123131030987 is a prime.

It is a super-2 number, since 2×123131031003² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123131031503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102250 + ... + 506672.

It is an arithmetic number, because the mean of its divisors is an integer number (14821802580).

Almost surely, 2^123131031003 is an apocalyptic number.

123131031003 is a deficient number, since it is larger than the sum of its proper divisors (54730599957).

123131031003 is a wasteful number, since it uses less digits than its factorization.

123131031003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438258 (or 438255 counting only the distinct ones).

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

Adding to 123131031003 its reverse (300130131321), we get a palindrome (423261162324).

The spelling of 123131031003 in words is "one hundred twenty-three billion, one hundred thirty-one million, thirty-one thousand, three".