133515323 has 2 divisors, whose sum is σ = 133515324. Its totient is φ = 133515322.

The previous prime is 133515313. The next prime is 133515341. The reversal of 133515323 is 323515331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133515323 - 2⁶ = 133515259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133515292 and 133515301.

It is not a weakly prime, because it can be changed into another prime (133515313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66757661 + 66757662.

It is an arithmetic number, because the mean of its divisors is an integer number (66757662).

Almost surely, 2^133515323 is an apocalyptic number.

133515323 is a deficient number, since it is larger than the sum of its proper divisors (1).

133515323 is an equidigital number, since it uses as much as digits as its factorization.

133515323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 26.

The square root of 133515323 is about 11554.8830803258. The cubic root of 133515323 is about 511.1052832546.

The spelling of 133515323 in words is "one hundred thirty-three million, five hundred fifteen thousand, three hundred twenty-three".