131121300231 has 16 divisors (see below), whose sum is σ = 202699595520. Its totient is φ = 83613582360.

The previous prime is 131121300217. The next prime is 131121300259. The reversal of 131121300231 is 132003121131.

131121300231 is a `hidden beast` number, since 1 + 311 + 21 + 300 + 2 + 31 = 666.

It is not a de Polignac number, because 131121300231 - 2⁵ = 131121300199 is a prime.

It is a super-2 number, since 2×131121300231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121300731) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 105572085 + ... + 105573326.

It is an arithmetic number, because the mean of its divisors is an integer number (12668724720).

Almost surely, 2^131121300231 is an apocalyptic number.

131121300231 is a deficient number, since it is larger than the sum of its proper divisors (71578295289).

131121300231 is a wasteful number, since it uses less digits than its factorization.

131121300231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211145443 (or 211145437 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131121300231 its reverse (132003121131), we get a palindrome (263124421362).

The spelling of 131121300231 in words is "one hundred thirty-one billion, one hundred twenty-one million, three hundred thousand, two hundred thirty-one".