133303623 has 8 divisors (see below), whose sum is σ = 177802608. Its totient is φ = 88836864.

The previous prime is 133303571. The next prime is 133303631. The reversal of 133303623 is 326303331.

It is a happy number.

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

It is not a de Polignac number, because 133303623 - 2⁸ = 133303367 is a prime.

It is a super-2 number, since 2×133303623² = 35539711809852258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133303593 and 133303602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133303663) 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, 4311 + ... + 16887.

It is an arithmetic number, because the mean of its divisors is an integer number (22225326).

Almost surely, 2^133303623 is an apocalyptic number.

133303623 is a deficient number, since it is larger than the sum of its proper divisors (44498985).

133303623 is a wasteful number, since it uses less digits than its factorization.

133303623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16113.

The product of its (nonzero) digits is 2916, while the sum is 24.

The square root of 133303623 is about 11545.7188169468. The cubic root of 133303623 is about 510.8350065958.

Adding to 133303623 its reverse (326303331), we get a palindrome (459606954).

The spelling of 133303623 in words is "one hundred thirty-three million, three hundred three thousand, six hundred twenty-three".