133800231 has 8 divisors (see below), whose sum is σ = 178630144. Its totient is φ = 89085240.

The previous prime is 133800209. The next prime is 133800239. The reversal of 133800231 is 132008331.

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 133800231 - 2¹⁰ = 133799207 is a prime.

It is a super-2 number, since 2×133800231² = 35805003631306722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133800198 and 133800207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133800239) 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, 25975 + ... + 30696.

It is an arithmetic number, because the mean of its divisors is an integer number (22328768).

Almost surely, 2^133800231 is an apocalyptic number.

133800231 is a deficient number, since it is larger than the sum of its proper divisors (44829913).

133800231 is an equidigital number, since it uses as much as digits as its factorization.

133800231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57461.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 133800231 is about 11567.2049778674. The cubic root of 133800231 is about 511.4685737131.

Adding to 133800231 its reverse (132008331), we get a palindrome (265808562).

The spelling of 133800231 in words is "one hundred thirty-three million, eight hundred thousand, two hundred thirty-one".