133713491 has 2 divisors, whose sum is σ = 133713492. Its totient is φ = 133713490.

The previous prime is 133713457. The next prime is 133713493. The reversal of 133713491 is 194317331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133713491 - 2¹⁴ = 133697107 is a prime.

Together with 133713493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133713493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66856745 + 66856746.

It is an arithmetic number, because the mean of its divisors is an integer number (66856746).

Almost surely, 2^133713491 is an apocalyptic number.

133713491 is a deficient number, since it is larger than the sum of its proper divisors (1).

133713491 is an equidigital number, since it uses as much as digits as its factorization.

133713491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 32.

The square root of 133713491 is about 11563.4549767792. The cubic root of 133713491 is about 511.3580248893.

The spelling of 133713491 in words is "one hundred thirty-three million, seven hundred thirteen thousand, four hundred ninety-one".