123130300031 has 4 divisors (see below), whose sum is σ = 123135406200. Its totient is φ = 123125193864.

The previous prime is 123130300021. The next prime is 123130300063. The reversal of 123130300031 is 130003031321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123130300031 is a prime.

It is a super-2 number, since 2×123130300031² (a number of 23 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 = 123130299982 and 123130300009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123130300021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2516741 + ... + 2565198.

It is an arithmetic number, because the mean of its divisors is an integer number (30783851550).

Almost surely, 2^123130300031 is an apocalyptic number.

123130300031 is a deficient number, since it is larger than the sum of its proper divisors (5106169).

123130300031 is an equidigital number, since it uses as much as digits as its factorization.

123130300031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106168.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 123130300031 its reverse (130003031321), we get a palindrome (253133331352).

The spelling of 123130300031 in words is "one hundred twenty-three billion, one hundred thirty million, three hundred thousand, thirty-one".