131433223 has 4 divisors (see below), whose sum is σ = 133587928. Its totient is φ = 129278520.

The previous prime is 131433221. The next prime is 131433233. The reversal of 131433223 is 322334131.

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

It is not a de Polignac number, because 131433223 - 2¹ = 131433221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131433194 and 131433203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131433221) 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, 1077261 + ... + 1077382.

It is an arithmetic number, because the mean of its divisors is an integer number (33396982).

Almost surely, 2^131433223 is an apocalyptic number.

131433223 is a deficient number, since it is larger than the sum of its proper divisors (2154705).

131433223 is an equidigital number, since it uses as much as digits as its factorization.

131433223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154704.

The product of its digits is 1296, while the sum is 22.

The square root of 131433223 is about 11464.4329558858. The cubic root of 131433223 is about 508.4345474234.

Adding to 131433223 its reverse (322334131), we get a palindrome (453767354).

The spelling of 131433223 in words is "one hundred thirty-one million, four hundred thirty-three thousand, two hundred twenty-three".