133232461 has 2 divisors, whose sum is σ = 133232462. Its totient is φ = 133232460.

The previous prime is 133232459. The next prime is 133232521. The reversal of 133232461 is 164232331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86378436 + 46854025 = 9294^2 + 6845^2 .

It is an emirp because it is prime and its reverse (164232331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133232461 - 2¹ = 133232459 is a prime.

Together with 133232459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133232861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66616230 + 66616231.

It is an arithmetic number, because the mean of its divisors is an integer number (66616231).

Almost surely, 2^133232461 is an apocalyptic number.

It is an amenable number.

133232461 is a deficient number, since it is larger than the sum of its proper divisors (1).

133232461 is an equidigital number, since it uses as much as digits as its factorization.

133232461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

The square root of 133232461 is about 11542.6366571941. The cubic root of 133232461 is about 510.7440900588.

Adding to 133232461 its reverse (164232331), we get a palindrome (297464792).

The spelling of 133232461 in words is "one hundred thirty-three million, two hundred thirty-two thousand, four hundred sixty-one".