131331534534 has 24 divisors (see below), whose sum is σ = 293730745152. Its totient is φ = 42365010960.

The previous prime is 131331534479. The next prime is 131331534539. The reversal of 131331534534 is 435435133131.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131331534539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117680029 + ... + 117681144.

It is an arithmetic number, because the mean of its divisors is an integer number (12238781048).

Almost surely, 2^131331534534 is an apocalyptic number.

131331534534 is an abundant number, since it is smaller than the sum of its proper divisors (162399210618).

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

131331534534 is a wasteful number, since it uses less digits than its factorization.

131331534534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235361212 (or 235361209 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

Adding to 131331534534 its reverse (435435133131), we get a palindrome (566766667665).

The spelling of 131331534534 in words is "one hundred thirty-one billion, three hundred thirty-one million, five hundred thirty-four thousand, five hundred thirty-four".