133153823 has 8 divisors (see below), whose sum is σ = 145486416. Its totient is φ = 120859200.

The previous prime is 133153807. The next prime is 133153837. The reversal of 133153823 is 328351331.

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

It is not a de Polignac number, because 133153823 - 2⁴ = 133153807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133156823) 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, 1886 + ... + 16427.

It is an arithmetic number, because the mean of its divisors is an integer number (18185802).

Almost surely, 2^133153823 is an apocalyptic number.

133153823 is a deficient number, since it is larger than the sum of its proper divisors (12332593).

133153823 is a wasteful number, since it uses less digits than its factorization.

133153823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18985.

The product of its digits is 6480, while the sum is 29.

The square root of 133153823 is about 11539.2297403250. The cubic root of 133153823 is about 510.6435845262.

The spelling of 133153823 in words is "one hundred thirty-three million, one hundred fifty-three thousand, eight hundred twenty-three".