131234533 has 2 divisors, whose sum is σ = 131234534. Its totient is φ = 131234532.

The previous prime is 131234531. The next prime is 131234569. The reversal of 131234533 is 335432131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115734564 + 15499969 = 10758^2 + 3937^2 .

It is a cyclic number.

It is not a de Polignac number, because 131234533 - 2¹ = 131234531 is a prime.

Together with 131234531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 131234498 and 131234507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131234531) 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 as a sum of consecutive naturals, namely, 65617266 + 65617267.

It is an arithmetic number, because the mean of its divisors is an integer number (65617267).

Almost surely, 2^131234533 is an apocalyptic number.

It is an amenable number.

131234533 is a deficient number, since it is larger than the sum of its proper divisors (1).

131234533 is an equidigital number, since it uses as much as digits as its factorization.

131234533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 25.

The square root of 131234533 is about 11455.7641822796. The cubic root of 131234533 is about 508.1782149534.

Adding to 131234533 its reverse (335432131), we get a palindrome (466666664).

The spelling of 131234533 in words is "one hundred thirty-one million, two hundred thirty-four thousand, five hundred thirty-three".