133481317 has 2 divisors, whose sum is σ = 133481318. Its totient is φ = 133481316.

The previous prime is 133481279. The next prime is 133481329. The reversal of 133481317 is 713184331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121308196 + 12173121 = 11014^2 + 3489^2 .

It is a cyclic number.

It is not a de Polignac number, because 133481317 - 2¹⁹ = 132957029 is a prime.

It is equal to p_7564333 and since 133481317 and 7564333 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133481357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66740658 + 66740659.

It is an arithmetic number, because the mean of its divisors is an integer number (66740659).

Almost surely, 2^133481317 is an apocalyptic number.

It is an amenable number.

133481317 is a deficient number, since it is larger than the sum of its proper divisors (1).

133481317 is an equidigital number, since it uses as much as digits as its factorization.

133481317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 133481317 is about 11553.4114875218. The cubic root of 133481317 is about 511.0618871817.

The spelling of 133481317 in words is "one hundred thirty-three million, four hundred eighty-one thousand, three hundred seventeen".