131403323 has 4 divisors (see below), whose sum is σ = 132704448. Its totient is φ = 130102200.

The previous prime is 131403299. The next prime is 131403331. The reversal of 131403323 is 323304131.

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 131403323 - 2¹² = 131399227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131403295 and 131403304.

It is not an unprimeable number, because it can be changed into a prime (131403343) 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, 650411 + ... + 650612.

It is an arithmetic number, because the mean of its divisors is an integer number (33176112).

Almost surely, 2^131403323 is an apocalyptic number.

131403323 is a deficient number, since it is larger than the sum of its proper divisors (1301125).

131403323 is a wasteful number, since it uses less digits than its factorization.

131403323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301124.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 131403323 is about 11463.1288486172. The cubic root of 131403323 is about 508.3959895774.

Adding to 131403323 its reverse (323304131), we get a palindrome (454707454).

The spelling of 131403323 in words is "one hundred thirty-one million, four hundred three thousand, three hundred twenty-three".