131320233 has 12 divisors (see below), whose sum is σ = 206929008. Its totient is φ = 79587960.

The previous prime is 131320219. The next prime is 131320261. The reversal of 131320233 is 332023131.

It is not a de Polignac number, because 131320233 - 2⁶ = 131320169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131320633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663135 + ... + 663332.

It is an arithmetic number, because the mean of its divisors is an integer number (17244084).

Almost surely, 2^131320233 is an apocalyptic number.

It is an amenable number.

131320233 is a deficient number, since it is larger than the sum of its proper divisors (75608775).

131320233 is a wasteful number, since it uses less digits than its factorization.

131320233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326484 (or 1326481 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 131320233 is about 11459.5040468600. The cubic root of 131320233 is about 508.2888093106.

Adding to 131320233 its reverse (332023131), we get a palindrome (463343364).

The spelling of 131320233 in words is "one hundred thirty-one million, three hundred twenty thousand, two hundred thirty-three".