133531881333 has 64 divisors (see below), whose sum is σ = 205921419264. Its totient is φ = 76462848000.

The previous prime is 133531881319. The next prime is 133531881347. The reversal of 133531881333 is 333188135331.

It is an interprime number because it is at equal distance from previous prime (133531881319) and next prime (133531881347).

It is not a de Polignac number, because 133531881333 - 2⁴ = 133531881317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133531883333) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2555913 + ... + 2607633.

It is an arithmetic number, because the mean of its divisors is an integer number (3217522176).

Almost surely, 2^133531881333 is an apocalyptic number.

It is an amenable number.

133531881333 is a deficient number, since it is larger than the sum of its proper divisors (72389537931).

133531881333 is a wasteful number, since it uses less digits than its factorization.

133531881333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51866.

The product of its digits is 233280, while the sum is 42.

The spelling of 133531881333 in words is "one hundred thirty-three billion, five hundred thirty-one million, eight hundred eighty-one thousand, three hundred thirty-three".