133831127 has 4 divisors (see below), whose sum is σ = 133855320. Its totient is φ = 133806936.

The previous prime is 133831099. The next prime is 133831129. The reversal of 133831127 is 721138331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133831127 - 2⁶ = 133831063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133831127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133831129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749 + ... + 16377.

It is an arithmetic number, because the mean of its divisors is an integer number (33463830).

Almost surely, 2^133831127 is an apocalyptic number.

133831127 is a deficient number, since it is larger than the sum of its proper divisors (24193).

133831127 is an equidigital number, since it uses as much as digits as its factorization.

133831127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24192.

The product of its digits is 3024, while the sum is 29.

The square root of 133831127 is about 11568.5404005864. The cubic root of 133831127 is about 511.5079386598.

Adding to 133831127 its reverse (721138331), we get a palindrome (854969458).

The spelling of 133831127 in words is "one hundred thirty-three million, eight hundred thirty-one thousand, one hundred twenty-seven".