131230123 has 4 divisors (see below), whose sum is σ = 138949560. Its totient is φ = 123510688.

The previous prime is 131230117. The next prime is 131230147. The reversal of 131230123 is 321032131.

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-131230123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131230097 and 131230106.

It is not an unprimeable number, because it can be changed into a prime (131234123) 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, 3859693 + ... + 3859726.

It is an arithmetic number, because the mean of its divisors is an integer number (34737390).

Almost surely, 2^131230123 is an apocalyptic number.

131230123 is a deficient number, since it is larger than the sum of its proper divisors (7719437).

131230123 is an equidigital number, since it uses as much as digits as its factorization.

131230123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7719436.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131230123 is about 11455.5717011418. The cubic root of 131230123 is about 508.1725226229.

Adding to 131230123 its reverse (321032131), we get a palindrome (452262254).

The spelling of 131230123 in words is "one hundred thirty-one million, two hundred thirty thousand, one hundred twenty-three".