133021313 has 4 divisors (see below), whose sum is σ = 133064448. Its totient is φ = 132978180.

The previous prime is 133021271. The next prime is 133021321. The reversal of 133021313 is 313120331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133021313 - 2⁶ = 133021249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133021291 and 133021300.

It is not an unprimeable number, because it can be changed into a prime (133021373) 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, 16553 + ... + 23238.

It is an arithmetic number, because the mean of its divisors is an integer number (33266112).

Almost surely, 2^133021313 is an apocalyptic number.

It is an amenable number.

133021313 is a deficient number, since it is larger than the sum of its proper divisors (43135).

133021313 is an equidigital number, since it uses as much as digits as its factorization.

133021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43134.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133021313 is about 11533.4865933940. The cubic root of 133021313 is about 510.4741367944.

Adding to 133021313 its reverse (313120331), we get a palindrome (446141644).

The spelling of 133021313 in words is "one hundred thirty-three million, twenty-one thousand, three hundred thirteen".