133331153 has 4 divisors (see below), whose sum is σ = 141174180. Its totient is φ = 125488128.

The previous prime is 133331147. The next prime is 133331173. The reversal of 133331153 is 351133331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 351133331 = 487 ⋅721013.

It can be written as a sum of positive squares in 2 ways, for example, as 75829264 + 57501889 = 8708^2 + 7583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133331153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133331173) 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, 3921488 + ... + 3921521.

It is an arithmetic number, because the mean of its divisors is an integer number (35293545).

Almost surely, 2^133331153 is an apocalyptic number.

It is an amenable number.

133331153 is a deficient number, since it is larger than the sum of its proper divisors (7843027).

133331153 is an equidigital number, since it uses as much as digits as its factorization.

133331153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7843026.

The product of its digits is 1215, while the sum is 23.

The square root of 133331153 is about 11546.9109722038. The cubic root of 133331153 is about 510.8701702305.

Adding to 133331153 its reverse (351133331), we get a palindrome (484464484).

The spelling of 133331153 in words is "one hundred thirty-three million, three hundred thirty-one thousand, one hundred fifty-three".