131413231 has 4 divisors (see below), whose sum is σ = 132002752. Its totient is φ = 130823712.

The previous prime is 131413229. The next prime is 131413267. The reversal of 131413231 is 132314131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131413231 - 2¹ = 131413229 is a prime.

It is a super-2 number, since 2×131413231² = 34538874563718722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131413199 and 131413208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131413201) 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, 294426 + ... + 294871.

It is an arithmetic number, because the mean of its divisors is an integer number (33000688).

Almost surely, 2^131413231 is an apocalyptic number.

131413231 is a deficient number, since it is larger than the sum of its proper divisors (589521).

131413231 is an equidigital number, since it uses as much as digits as its factorization.

131413231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589520.

The product of its digits is 216, while the sum is 19.

The square root of 131413231 is about 11463.5610086918. The cubic root of 131413231 is about 508.4087671864.

Adding to 131413231 its reverse (132314131), we get a palindrome (263727362).

The spelling of 131413231 in words is "one hundred thirty-one million, four hundred thirteen thousand, two hundred thirty-one".