133111313 has 4 divisors (see below), whose sum is σ = 133149168. Its totient is φ = 133073460.

The previous prime is 133111301. The next prime is 133111331. The reversal of 133111313 is 313111331.

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 133111313 - 2⁸ = 133111057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133111291 and 133111300.

It is not an unprimeable number, because it can be changed into a prime (133111393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13043 + ... + 20888.

It is an arithmetic number, because the mean of its divisors is an integer number (33287292).

Almost surely, 2^133111313 is an apocalyptic number.

It is an amenable number.

133111313 is a deficient number, since it is larger than the sum of its proper divisors (37855).

133111313 is an equidigital number, since it uses as much as digits as its factorization.

133111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37854.

The product of its digits is 81, while the sum is 17.

The square root of 133111313 is about 11537.3876159207. The cubic root of 133111313 is about 510.5892369334.

Adding to 133111313 its reverse (313111331), we get a palindrome (446222644).

The spelling of 133111313 in words is "one hundred thirty-three million, one hundred eleven thousand, three hundred thirteen".