131444252331 has 32 divisors (see below), whose sum is σ = 212324364288. Its totient is φ = 70610626560.

The previous prime is 131444252327. The next prime is 131444252411. The reversal of 131444252331 is 133252444131.

It is not a de Polignac number, because 131444252331 - 2² = 131444252327 is a prime.

It is a super-2 number, since 2×131444252331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131444252292 and 131444252301.

It is not an unprimeable number, because it can be changed into a prime (131444252321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94771 + ... + 521411.

It is an arithmetic number, because the mean of its divisors is an integer number (6635136384).

Almost surely, 2^131444252331 is an apocalyptic number.

131444252331 is a deficient number, since it is larger than the sum of its proper divisors (80880111957).

131444252331 is a wasteful number, since it uses less digits than its factorization.

131444252331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427531.

The product of its digits is 34560, while the sum is 33.

Adding to 131444252331 its reverse (133252444131), we get a palindrome (264696696462).

The spelling of 131444252331 in words is "one hundred thirty-one billion, four hundred forty-four million, two hundred fifty-two thousand, three hundred thirty-one".