133711380 has 72 divisors (see below), whose sum is σ = 442469664. Its totient is φ = 32414400.

The previous prime is 133711363. The next prime is 133711387. The reversal of 133711380 is 83117331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133711387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31786 + ... + 35745.

It is an arithmetic number, because the mean of its divisors is an integer number (6145412).

Almost surely, 2^133711380 is an apocalyptic number.

133711380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133711380 is an abundant number, since it is smaller than the sum of its proper divisors (308758284).

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

133711380 is a wasteful number, since it uses less digits than its factorization.

133711380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67557 (or 67552 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 133711380 is about 11563.3636974714. The cubic root of 133711380 is about 511.3553338558.

The spelling of 133711380 in words is "one hundred thirty-three million, seven hundred eleven thousand, three hundred eighty".