131024253242 has 8 divisors (see below), whose sum is σ = 203313496500. Its totient is φ = 63253087744.

The previous prime is 131024253233. The next prime is 131024253247. The reversal of 131024253242 is 242352420131.

It can be written as a sum of positive squares in 2 ways, for example, as 128952091801 + 2072161441 = 359099^2 + 45521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (131024253247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129519367 + ... + 1129519482.

Almost surely, 2^131024253242 is an apocalyptic number.

131024253242 is a deficient number, since it is larger than the sum of its proper divisors (72289243258).

131024253242 is a wasteful number, since it uses less digits than its factorization.

131024253242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259038880.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 131024253242 its reverse (242352420131), we get a palindrome (373376673373).

The spelling of 131024253242 in words is "one hundred thirty-one billion, twenty-four million, two hundred fifty-three thousand, two hundred forty-two".