131244123 has 16 divisors (see below), whose sum is σ = 178336800. Its totient is φ = 85831680.

The previous prime is 131244119. The next prime is 131244133. The reversal of 131244123 is 321442131.

It is not a de Polignac number, because 131244123 - 2² = 131244119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131244123.

It is not an unprimeable number, because it can be changed into a prime (131244133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92443 + ... + 93851.

It is an arithmetic number, because the mean of its divisors is an integer number (11146050).

Almost surely, 2^131244123 is an apocalyptic number.

131244123 is a deficient number, since it is larger than the sum of its proper divisors (47092677).

131244123 is a wasteful number, since it uses less digits than its factorization.

131244123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982.

The product of its digits is 576, while the sum is 21.

The square root of 131244123 is about 11456.1827412101. The cubic root of 131244123 is about 508.1905930734.

Adding to 131244123 its reverse (321442131), we get a palindrome (452686254).

The spelling of 131244123 in words is "one hundred thirty-one million, two hundred forty-four thousand, one hundred twenty-three".