133623005 has 8 divisors (see below), whose sum is σ = 160420824. Its totient is φ = 106849600.

The previous prime is 133622987. The next prime is 133623019. The reversal of 133623005 is 500326331.

It can be written as a sum of positive squares in 4 ways, for example, as 8048569 + 125574436 = 2837^2 + 11206^2 .

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

It is not a de Polignac number, because 133623005 - 2¹² = 133618909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9635 + ... + 18975.

It is an arithmetic number, because the mean of its divisors is an integer number (20052603).

Almost surely, 2^133623005 is an apocalyptic number.

It is an amenable number.

133623005 is a deficient number, since it is larger than the sum of its proper divisors (26797819).

133623005 is an equidigital number, since it uses as much as digits as its factorization.

133623005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12207.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 133623005 is about 11559.5417296708. The cubic root of 133623005 is about 511.2426508828.

Adding to 133623005 its reverse (500326331), we get a palindrome (633949336).

The spelling of 133623005 in words is "one hundred thirty-three million, six hundred twenty-three thousand, five".