123673123131 has 4 divisors (see below), whose sum is σ = 164897497512. Its totient is φ = 82448748752.

The previous prime is 123673123097. The next prime is 123673123139. The reversal of 123673123131 is 131321376321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123673123131 - 2¹⁰ = 123673122107 is a prime.

It is a super-2 number, since 2×123673123131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123673123092 and 123673123101.

It is not an unprimeable number, because it can be changed into a prime (123673123139) 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, 20612187186 + ... + 20612187191.

It is an arithmetic number, because the mean of its divisors is an integer number (41224374378).

Almost surely, 2^123673123131 is an apocalyptic number.

123673123131 is a deficient number, since it is larger than the sum of its proper divisors (41224374381).

123673123131 is an equidigital number, since it uses as much as digits as its factorization.

123673123131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41224374380.

The product of its digits is 13608, while the sum is 33.

Adding to 123673123131 its reverse (131321376321), we get a palindrome (254994499452).

The spelling of 123673123131 in words is "one hundred twenty-three billion, six hundred seventy-three million, one hundred twenty-three thousand, one hundred thirty-one".