131044430242 has 16 divisors (see below), whose sum is σ = 218070856800. Its totient is φ = 58556062240.

The previous prime is 131044430239. The next prime is 131044430243. The reversal of 131044430242 is 242034440131.

It is a self number, because there is not a number n which added to its sum of digits gives 131044430242.

It is not an unprimeable number, because it can be changed into a prime (131044430243) 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, 50478067 + ... + 50480662.

It is an arithmetic number, because the mean of its divisors is an integer number (13629428550).

Almost surely, 2^131044430242 is an apocalyptic number.

131044430242 is a deficient number, since it is larger than the sum of its proper divisors (87026426558).

131044430242 is a wasteful number, since it uses less digits than its factorization.

131044430242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100958801.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 131044430242 its reverse (242034440131), we get a palindrome (373078870373).

The spelling of 131044430242 in words is "one hundred thirty-one billion, forty-four million, four hundred thirty thousand, two hundred forty-two".