133313465 has 4 divisors (see below), whose sum is σ = 159976164. Its totient is φ = 106650768.

The previous prime is 133313461. The next prime is 133313471. The reversal of 133313465 is 564313331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564313331 = 5981 ⋅94351.

It can be written as a sum of positive squares in 2 ways, for example, as 76597504 + 56715961 = 8752^2 + 7531^2 .

It is a cyclic number.

It is not a de Polignac number, because 133313465 - 2² = 133313461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133313461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13331342 + ... + 13331351.

It is an arithmetic number, because the mean of its divisors is an integer number (39994041).

Almost surely, 2^133313465 is an apocalyptic number.

It is an amenable number.

133313465 is a deficient number, since it is larger than the sum of its proper divisors (26662699).

133313465 is an equidigital number, since it uses as much as digits as its factorization.

133313465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26662698.

The product of its digits is 9720, while the sum is 29.

The square root of 133313465 is about 11546.1450276705. The cubic root of 133313465 is about 510.8475781831.

Adding to 133313465 its reverse (564313331), we get a palindrome (697626796).

The spelling of 133313465 in words is "one hundred thirty-three million, three hundred thirteen thousand, four hundred sixty-five".