133120231 has 8 divisors (see below), whose sum is σ = 137562624. Its totient is φ = 128687160.

The previous prime is 133120201. The next prime is 133120261. The reversal of 133120231 is 132021331.

It is an interprime number because it is at equal distance from previous prime (133120201) and next prime (133120261).

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 133120231 - 2⁵ = 133120199 is a prime.

It is a super-2 number, since 2×133120231² = 35441991802986722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38100 + ... + 41446.

It is an arithmetic number, because the mean of its divisors is an integer number (17195328).

Almost surely, 2^133120231 is an apocalyptic number.

133120231 is a deficient number, since it is larger than the sum of its proper divisors (4442393).

133120231 is a wasteful number, since it uses less digits than its factorization.

133120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133120231 is about 11537.7740920855. The cubic root of 133120231 is about 510.6006392529.

Adding to 133120231 its reverse (132021331), we get a palindrome (265141562).

The spelling of 133120231 in words is "one hundred thirty-three million, one hundred twenty thousand, two hundred thirty-one".