131121310232 has 24 divisors (see below), whose sum is σ = 270234520500. Its totient is φ = 59600595120.

The previous prime is 131121310223. The next prime is 131121310391. The reversal of 131121310232 is 232013121131.

It is a happy number.

It is a super-4 number, since 4×131121310232⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67726982 + ... + 67728917.

Almost surely, 2^131121310232 is an apocalyptic number.

It is an amenable number.

131121310232 is an abundant number, since it is smaller than the sum of its proper divisors (139113210268).

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

131121310232 is a wasteful number, since it uses less digits than its factorization.

131121310232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135455927 (or 135455912 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131121310232 its reverse (232013121131), we get a palindrome (363134431363).

The spelling of 131121310232 in words is "one hundred thirty-one billion, one hundred twenty-one million, three hundred ten thousand, two hundred thirty-two".