131633237 has 2 divisors, whose sum is σ = 131633238. Its totient is φ = 131633236.

The previous prime is 131633231. The next prime is 131633251. The reversal of 131633237 is 732336131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122788561 + 8844676 = 11081^2 + 2974^2 .

It is an emirp because it is prime and its reverse (732336131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131633237 - 2⁴ = 131633221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131633231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65816618 + 65816619.

It is an arithmetic number, because the mean of its divisors is an integer number (65816619).

Almost surely, 2^131633237 is an apocalyptic number.

It is an amenable number.

131633237 is a deficient number, since it is larger than the sum of its proper divisors (1).

131633237 is an equidigital number, since it uses as much as digits as its factorization.

131633237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 29.

The square root of 131633237 is about 11473.1528796578. The cubic root of 131633237 is about 508.6923272122.

Adding to 131633237 its reverse (732336131), we get a palindrome (863969368).

The spelling of 131633237 in words is "one hundred thirty-one million, six hundred thirty-three thousand, two hundred thirty-seven".