131255204442 has 32 divisors (see below), whose sum is σ = 266142801600. Its totient is φ = 43148865408.

The previous prime is 131255204329. The next prime is 131255204449. The reversal of 131255204442 is 244402552131.

It is a super-2 number, since 2×131255204442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131255204449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108208 + ... + 523659.

It is an arithmetic number, because the mean of its divisors is an integer number (8316962550).

Almost surely, 2^131255204442 is an apocalyptic number.

131255204442 is an abundant number, since it is smaller than the sum of its proper divisors (134887597158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131255204442 is a wasteful number, since it uses less digits than its factorization.

131255204442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632350.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 131255204442 its reverse (244402552131), we get a palindrome (375657756573).

The spelling of 131255204442 in words is "one hundred thirty-one billion, two hundred fifty-five million, two hundred four thousand, four hundred forty-two".