133131801 has 8 divisors (see below), whose sum is σ = 193646304. Its totient is φ = 80685920.

The previous prime is 133131799. The next prime is 133131833. The reversal of 133131801 is 108131331.

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 133131801 - 2¹ = 133131799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133131851) 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, 2017116 + ... + 2017181.

It is an arithmetic number, because the mean of its divisors is an integer number (24205788).

Almost surely, 2^133131801 is an apocalyptic number.

133131801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133131801 is a deficient number, since it is larger than the sum of its proper divisors (60514503).

133131801 is a wasteful number, since it uses less digits than its factorization.

133131801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034311.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 133131801 is about 11538.2754777306. The cubic root of 133131801 is about 510.6154315906.

The spelling of 133131801 in words is "one hundred thirty-three million, one hundred thirty-one thousand, eight hundred one".