131322413 has 4 divisors (see below), whose sum is σ = 131360508. Its totient is φ = 131284320.

The previous prime is 131322379. The next prime is 131322421. The reversal of 131322413 is 314223131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314223131 = 8443 ⋅37217.

It can be written as a sum of positive squares in 2 ways, for example, as 92409769 + 38912644 = 9613^2 + 6238^2 .

It is a cyclic number.

It is not a de Polignac number, because 131322413 - 2⁶ = 131322349 is a prime.

It is a super-2 number, since 2×131322413² = 34491152312285138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131322463) 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, 13298 + ... + 20963.

It is an arithmetic number, because the mean of its divisors is an integer number (32840127).

Almost surely, 2^131322413 is an apocalyptic number.

It is an amenable number.

131322413 is a deficient number, since it is larger than the sum of its proper divisors (38095).

131322413 is an equidigital number, since it uses as much as digits as its factorization.

131322413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38094.

The product of its digits is 432, while the sum is 20.

The square root of 131322413 is about 11459.5991640197. The cubic root of 131322413 is about 508.2916219350.

Adding to 131322413 its reverse (314223131), we get a palindrome (445545544).

The spelling of 131322413 in words is "one hundred thirty-one million, three hundred twenty-two thousand, four hundred thirteen".