133103231 has 8 divisors (see below), whose sum is σ = 139553664. Its totient is φ = 126708120.

The previous prime is 133103219. The next prime is 133103263. The reversal of 133103231 is 132301331.

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 133103231 - 2¹⁴ = 133086847 is a prime.

It is a super-2 number, since 2×133103231² = 35432940205278722, 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 (133003231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8861 + ... + 18566.

It is an arithmetic number, because the mean of its divisors is an integer number (17444208).

Almost surely, 2^133103231 is an apocalyptic number.

133103231 is a deficient number, since it is larger than the sum of its proper divisors (6450433).

133103231 is a wasteful number, since it uses less digits than its factorization.

133103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27661.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133103231 is about 11537.0373580049. The cubic root of 133103231 is about 510.5789030616.

Adding to 133103231 its reverse (132301331), we get a palindrome (265404562).

The spelling of 133103231 in words is "one hundred thirty-three million, one hundred three thousand, two hundred thirty-one".