133931376 has 30 divisors (see below), whose sum is σ = 374822240. Its totient is φ = 44643744.

The previous prime is 133931363. The next prime is 133931393. The reversal of 133931376 is 673139331.

133931376 is a `hidden beast` number, since 1 + 339 + 313 + 7 + 6 = 666.

It is a super-2 number, since 2×133931376² = 35875226954506752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 133931376.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464896 + ... + 465183.

Almost surely, 2^133931376 is an apocalyptic number.

133931376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133931376 is an abundant number, since it is smaller than the sum of its proper divisors (240890864).

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

133931376 is a wasteful number, since it uses less digits than its factorization.

133931376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930093 (or 930084 counting only the distinct ones).

The product of its digits is 30618, while the sum is 36.

The square root of 133931376 is about 11572.8724178572. The cubic root of 133931376 is about 511.6356253502.

The spelling of 133931376 in words is "one hundred thirty-three million, nine hundred thirty-one thousand, three hundred seventy-six".