133251133 has 2 divisors, whose sum is σ = 133251134. Its totient is φ = 133251132.

The previous prime is 133251101. The next prime is 133251149. The reversal of 133251133 is 331152331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132089049 + 1162084 = 11493^2 + 1078^2 .

It is a cyclic number.

It is not a de Polignac number, because 133251133 - 2⁵ = 133251101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133251163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66625566 + 66625567.

It is an arithmetic number, because the mean of its divisors is an integer number (66625567).

Almost surely, 2^133251133 is an apocalyptic number.

It is an amenable number.

133251133 is a deficient number, since it is larger than the sum of its proper divisors (1).

133251133 is an equidigital number, since it uses as much as digits as its factorization.

133251133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 22.

The square root of 133251133 is about 11543.4454561885. The cubic root of 133251133 is about 510.7679485292.

The spelling of 133251133 in words is "one hundred thirty-three million, two hundred fifty-one thousand, one hundred thirty-three".