131224255231 has 16 divisors (see below), whose sum is σ = 141927609600. Its totient is φ = 120918916800.

The previous prime is 131224255219. The next prime is 131224255291. The reversal of 131224255231 is 132552422131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131224255231 - 2¹¹ = 131224253183 is a prime.

It is a super-2 number, since 2×131224255231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131224255193 and 131224255202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224255291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3390 + ... + 512308.

It is an arithmetic number, because the mean of its divisors is an integer number (8870475600).

Almost surely, 2^131224255231 is an apocalyptic number.

131224255231 is a deficient number, since it is larger than the sum of its proper divisors (10703354369).

131224255231 is a wasteful number, since it uses less digits than its factorization.

131224255231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509310.

The product of its digits is 14400, while the sum is 31.

Adding to 131224255231 its reverse (132552422131), we get a palindrome (263776677362).

The spelling of 131224255231 in words is "one hundred thirty-one billion, two hundred twenty-four million, two hundred fifty-five thousand, two hundred thirty-one".