131301231 has 24 divisors (see below), whose sum is σ = 182578176. Its totient is φ = 83885760.

The previous prime is 131301199. The next prime is 131301259. The reversal of 131301231 is 132103131.

It is not a de Polignac number, because 131301231 - 2⁵ = 131301199 is a prime.

It is a super-2 number, since 2×131301231² = 34480026524230722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131301231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131301281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 687346 + ... + 687536.

It is an arithmetic number, because the mean of its divisors is an integer number (7607424).

Almost surely, 2^131301231 is an apocalyptic number.

131301231 is a deficient number, since it is larger than the sum of its proper divisors (51276945).

131301231 is an equidigital number, since it uses as much as digits as its factorization.

131301231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131301231 is about 11458.6749233932. The cubic root of 131301231 is about 508.2642917131.

Adding to 131301231 its reverse (132103131), we get a palindrome (263404362).

The spelling of 131301231 in words is "one hundred thirty-one million, three hundred one thousand, two hundred thirty-one".