131133213 has 12 divisors (see below), whose sum is σ = 191153820. Its totient is φ = 86619456.

The previous prime is 131133203. The next prime is 131133221. The reversal of 131133213 is 312331131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55756089 + 75377124 = 7467^2 + 8682^2 .

It is not a de Polignac number, because 131133213 - 2⁵ = 131133181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131133203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65856 + ... + 67817.

It is an arithmetic number, because the mean of its divisors is an integer number (15929485).

Almost surely, 2^131133213 is an apocalyptic number.

It is an amenable number.

131133213 is a deficient number, since it is larger than the sum of its proper divisors (60020607).

131133213 is a wasteful number, since it uses less digits than its factorization.

131133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133788 (or 133785 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 131133213 is about 11451.3411005000. The cubic root of 131133213 is about 508.0474011300.

Adding to 131133213 its reverse (312331131), we get a palindrome (443464344).

The spelling of 131133213 in words is "one hundred thirty-one million, one hundred thirty-three thousand, two hundred thirteen".