133011243 has 24 divisors (see below), whose sum is σ = 195685776. Its totient is φ = 87048000.

The previous prime is 133011239. The next prime is 133011259. The reversal of 133011243 is 342110331.

It is not a de Polignac number, because 133011243 - 2² = 133011239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133011143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118521 + ... + 119637.

It is an arithmetic number, because the mean of its divisors is an integer number (8153574).

Almost surely, 2^133011243 is an apocalyptic number.

133011243 is a deficient number, since it is larger than the sum of its proper divisors (62674533).

133011243 is a wasteful number, since it uses less digits than its factorization.

133011243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133011243 is about 11533.0500302392. The cubic root of 133011243 is about 510.4612551387.

Adding to 133011243 its reverse (342110331), we get a palindrome (475121574).

The spelling of 133011243 in words is "one hundred thirty-three million, eleven thousand, two hundred forty-three".