133123313 has 8 divisors (see below), whose sum is σ = 136380288. Its totient is φ = 129873744.

The previous prime is 133123279. The next prime is 133123321. The reversal of 133123313 is 313321331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133123313 - 2¹⁴ = 133106929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133123343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55895 + ... + 58227.

It is an arithmetic number, because the mean of its divisors is an integer number (17047536).

Almost surely, 2^133123313 is an apocalyptic number.

It is an amenable number.

133123313 is a deficient number, since it is larger than the sum of its proper divisors (3256975).

133123313 is a wasteful number, since it uses less digits than its factorization.

133123313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703.

The product of its digits is 486, while the sum is 20.

The square root of 133123313 is about 11537.9076526032. The cubic root of 133123313 is about 510.6045796983.

Adding to 133123313 its reverse (313321331), we get a palindrome (446444644).

The spelling of 133123313 in words is "one hundred thirty-three million, one hundred twenty-three thousand, three hundred thirteen".