131233321201231 has 4 divisors (see below), whose sum is σ = 131233344159312. Its totient is φ = 131233298243152.

The previous prime is 131233321201207. The next prime is 131233321201247. The reversal of 131233321201231 is 132102123332131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 131233321201231 - 2³³ = 131224731266639 is a prime.

It is a super-2 number, since 2×131233321201231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131233321201231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131233321201201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4642326 + ... + 16852828.

It is an arithmetic number, because the mean of its divisors is an integer number (32808336039828).

Almost surely, 2^{131233321201231} is an apocalyptic number.

131233321201231 is a deficient number, since it is larger than the sum of its proper divisors (22958081).

131233321201231 is a wasteful number, since it uses less digits than its factorization.

131233321201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22958080.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 131233321201231 its reverse (132102123332131), we get a palindrome (263335444533362).

The spelling of 131233321201231 in words is "one hundred thirty-one trillion, two hundred thirty-three billion, three hundred twenty-one million, two hundred one thousand, two hundred thirty-one".