133023510 has 96 divisors (see below), whose sum is σ = 363860640. Its totient is φ = 33675264.

The previous prime is 133023479. The next prime is 133023571. The reversal of 133023510 is 15320331.

133023510 is a `hidden beast` number, since 13 + 302 + 351 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142726 + ... + 143654.

It is an arithmetic number, because the mean of its divisors is an integer number (3790215).

Almost surely, 2^133023510 is an apocalyptic number.

133023510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133023510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181930320).

133023510 is an abundant number, since it is smaller than the sum of its proper divisors (230837130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133023510 is a wasteful number, since it uses less digits than its factorization.

133023510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 133023510 is about 11533.5818373999. The cubic root of 133023510 is about 510.4769471348.

Adding to 133023510 its reverse (15320331), we get a palindrome (148343841).

The spelling of 133023510 in words is "one hundred thirty-three million, twenty-three thousand, five hundred ten".