133206623 has 8 divisors (see below), whose sum is σ = 149244240. Its totient is φ = 117823680.

The previous prime is 133206589. The next prime is 133206631. The reversal of 133206623 is 326602331.

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 133206623 - 2⁶ = 133206559 is a prime.

It is a super-2 number, since 2×133206623² = 35488008822128258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133206592 and 133206601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133206673) 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, 163238 + ... + 164051.

It is an arithmetic number, because the mean of its divisors is an integer number (18655530).

Almost surely, 2^133206623 is an apocalyptic number.

133206623 is a deficient number, since it is larger than the sum of its proper divisors (16037617).

133206623 is a wasteful number, since it uses less digits than its factorization.

133206623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327337.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 133206623 is about 11541.5173612485. The cubic root of 133206623 is about 510.7110714314.

Adding to 133206623 its reverse (326602331), we get a palindrome (459808954).

The spelling of 133206623 in words is "one hundred thirty-three million, two hundred six thousand, six hundred twenty-three".