131230442 has 16 divisors (see below), whose sum is σ = 225296640. Its totient is φ = 56159088.

The previous prime is 131230399. The next prime is 131230447. The reversal of 131230442 is 244032131.

It is not an unprimeable number, because it can be changed into a prime (131230447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3548 + ... + 16584.

It is an arithmetic number, because the mean of its divisors is an integer number (14081040).

Almost surely, 2^131230442 is an apocalyptic number.

131230442 is a deficient number, since it is larger than the sum of its proper divisors (94066198).

131230442 is a wasteful number, since it uses less digits than its factorization.

131230442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13765.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 131230442 is about 11455.5856244890. The cubic root of 131230442 is about 508.1729343853.

Adding to 131230442 its reverse (244032131), we get a palindrome (375262573).

The spelling of 131230442 in words is "one hundred thirty-one million, two hundred thirty thousand, four hundred forty-two".