133931377 has 8 divisors (see below), whose sum is σ = 138654720. Its totient is φ = 129233280.

The previous prime is 133931363. The next prime is 133931393. The reversal of 133931377 is 773139331.

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

It is a cyclic number.

It is not a de Polignac number, because 133931377 - 2⁷ = 133931249 is a prime.

It is a super-2 number, since 2×133931377² = 35875227490232258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133931177) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4824 + ... + 17062.

It is an arithmetic number, because the mean of its divisors is an integer number (17331840).

Almost surely, 2^133931377 is an apocalyptic number.

It is an amenable number.

133931377 is a deficient number, since it is larger than the sum of its proper divisors (4723343).

133931377 is a wasteful number, since it uses less digits than its factorization.

133931377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12623.

The product of its digits is 35721, while the sum is 37.

The square root of 133931377 is about 11572.8724610617. The cubic root of 133931377 is about 511.6356266235.

The spelling of 133931377 in words is "one hundred thirty-three million, nine hundred thirty-one thousand, three hundred seventy-seven".