131232321131 has 4 divisors (see below), whose sum is σ = 131283928992. Its totient is φ = 131180713272.

The previous prime is 131232321127. The next prime is 131232321163. The reversal of 131232321131 is 131123232131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131123232131 = 58661 ⋅2235271.

It is a cyclic number.

It is not a de Polignac number, because 131232321131 - 2² = 131232321127 is a prime.

It is a super-2 number, since 2×131232321131² (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 = 131232321097 and 131232321106.

It is not an unprimeable number, because it can be changed into a prime (131232321431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25800116 + ... + 25805201.

It is an arithmetic number, because the mean of its divisors is an integer number (32820982248).

Almost surely, 2^131232321131 is an apocalyptic number.

131232321131 is a deficient number, since it is larger than the sum of its proper divisors (51607861).

131232321131 is an equidigital number, since it uses as much as digits as its factorization.

131232321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51607860.

The product of its digits is 648, while the sum is 23.

Adding to 131232321131 its reverse (131123232131), we get a palindrome (262355553262).

The spelling of 131232321131 in words is "one hundred thirty-one billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred thirty-one".