133233243 has 16 divisors (see below), whose sum is σ = 208701696. Its totient is φ = 74535840.

The previous prime is 133233239. The next prime is 133233271. The reversal of 133233243 is 342332331.

It is a happy number.

It is not a de Polignac number, because 133233243 - 2² = 133233239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133233223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154855 + ... + 155712.

It is an arithmetic number, because the mean of its divisors is an integer number (13043856).

Almost surely, 2^133233243 is an apocalyptic number.

133233243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133233243 is a deficient number, since it is larger than the sum of its proper divisors (75468453).

133233243 is a wasteful number, since it uses less digits than its factorization.

133233243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310594.

The product of its digits is 3888, while the sum is 24.

The square root of 133233243 is about 11542.6705315538. The cubic root of 133233243 is about 510.7450893175.

Adding to 133233243 its reverse (342332331), we get a palindrome (475565574).

The spelling of 133233243 in words is "one hundred thirty-three million, two hundred thirty-three thousand, two hundred forty-three".