131413321 has 8 divisors (see below), whose sum is σ = 141634304. Its totient is φ = 121208400.

The previous prime is 131413279. The next prime is 131413327. The reversal of 131413321 is 123314131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131413321 - 2²¹ = 129316169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131413327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17146 + ... + 23596.

It is an arithmetic number, because the mean of its divisors is an integer number (17704288).

Almost surely, 2^131413321 is an apocalyptic number.

It is an amenable number.

131413321 is a deficient number, since it is larger than the sum of its proper divisors (10220983).

131413321 is a wasteful number, since it uses less digits than its factorization.

131413321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031.

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

The square root of 131413321 is about 11463.5649341730. The cubic root of 131413321 is about 508.4088832498.

Adding to 131413321 its reverse (123314131), we get a palindrome (254727452).

The spelling of 131413321 in words is "one hundred thirty-one million, four hundred thirteen thousand, three hundred twenty-one".