133349423 has 4 divisors (see below), whose sum is σ = 139147248. Its totient is φ = 127551600.

The previous prime is 133349417. The next prime is 133349449. The reversal of 133349423 is 324943331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324943331 = 613 ⋅530087.

It is a cyclic number.

It is not a de Polignac number, because 133349423 - 2¹² = 133345327 is a prime.

It is a super-2 number, since 2×133349423² = 35564137228865858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133349423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133349023) 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, 2898878 + ... + 2898923.

It is an arithmetic number, because the mean of its divisors is an integer number (34786812).

Almost surely, 2^133349423 is an apocalyptic number.

133349423 is a deficient number, since it is larger than the sum of its proper divisors (5797825).

133349423 is an equidigital number, since it uses as much as digits as its factorization.

133349423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797824.

The product of its digits is 23328, while the sum is 32.

The square root of 133349423 is about 11547.7020657791. The cubic root of 133349423 is about 510.8935035414.

The spelling of 133349423 in words is "one hundred thirty-three million, three hundred forty-nine thousand, four hundred twenty-three".