133825631 has 8 divisors (see below), whose sum is σ = 135657984. Its totient is φ = 131998680.

The previous prime is 133825609. The next prime is 133825673. The reversal of 133825631 is 136528331.

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 133825631 - 2⁶ = 133825567 is a prime.

It is a super-2 number, since 2×133825631² = 35818599025096322, 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 (133825231) 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, 81440 + ... + 83066.

It is an arithmetic number, because the mean of its divisors is an integer number (16957248).

Almost surely, 2^133825631 is an apocalyptic number.

133825631 is a deficient number, since it is larger than the sum of its proper divisors (1832353).

133825631 is an equidigital number, since it uses as much as digits as its factorization.

133825631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701.

The product of its digits is 12960, while the sum is 32.

The square root of 133825631 is about 11568.3028573771. The cubic root of 133825631 is about 511.5009365864.

The spelling of 133825631 in words is "one hundred thirty-three million, eight hundred twenty-five thousand, six hundred thirty-one".