133451369 has 2 divisors, whose sum is σ = 133451370. Its totient is φ = 133451368.

The previous prime is 133451323. The next prime is 133451389. The reversal of 133451369 is 963154331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95160025 + 38291344 = 9755^2 + 6188^2 .

It is a cyclic number.

It is not a de Polignac number, because 133451369 - 2²⁰ = 132402793 is a prime.

It is a super-2 number, since 2×133451369² = 35618535775948322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (133451389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66725684 + 66725685.

It is an arithmetic number, because the mean of its divisors is an integer number (66725685).

Almost surely, 2^133451369 is an apocalyptic number.

It is an amenable number.

133451369 is a deficient number, since it is larger than the sum of its proper divisors (1).

133451369 is an equidigital number, since it uses as much as digits as its factorization.

133451369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 35.

The square root of 133451369 is about 11552.1153474158. The cubic root of 133451369 is about 511.0236635398.

The spelling of 133451369 in words is "one hundred thirty-three million, four hundred fifty-one thousand, three hundred sixty-nine".