133838831 has 8 divisors (see below), whose sum is σ = 161009280. Its totient is φ = 108681048.

The previous prime is 133838767. The next prime is 133838839. The reversal of 133838831 is 138838331.

It is a happy number.

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

It is not a de Polignac number, because 133838831 - 2⁶ = 133838767 is a prime.

It is a super-2 number, since 2×133838831² = 35825665366893122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133838839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503021 + ... + 503286.

It is an arithmetic number, because the mean of its divisors is an integer number (20126160).

Almost surely, 2^133838831 is an apocalyptic number.

133838831 is a deficient number, since it is larger than the sum of its proper divisors (27170449).

133838831 is a wasteful number, since it uses less digits than its factorization.

133838831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006333.

The product of its digits is 41472, while the sum is 38.

The square root of 133838831 is about 11568.8733677917. The cubic root of 133838831 is about 511.5177534706.

The spelling of 133838831 in words is "one hundred thirty-three million, eight hundred thirty-eight thousand, eight hundred thirty-one".