133142213 has 2 divisors, whose sum is σ = 133142214. Its totient is φ = 133142212.

The previous prime is 133142171. The next prime is 133142221. The reversal of 133142213 is 312241331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123698884 + 9443329 = 11122^2 + 3073^2 .

It is a cyclic number.

It is not a de Polignac number, because 133142213 - 2¹⁴ = 133125829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133142813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66571106 + 66571107.

It is an arithmetic number, because the mean of its divisors is an integer number (66571107).

Almost surely, 2^133142213 is an apocalyptic number.

It is an amenable number.

133142213 is a deficient number, since it is larger than the sum of its proper divisors (1).

133142213 is an equidigital number, since it uses as much as digits as its factorization.

133142213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 133142213 is about 11538.7266628515. The cubic root of 133142213 is about 510.6287426834.

Adding to 133142213 its reverse (312241331), we get a palindrome (445383544).

The spelling of 133142213 in words is "one hundred thirty-three million, one hundred forty-two thousand, two hundred thirteen".