133203263 has 2 divisors, whose sum is σ = 133203264. Its totient is φ = 133203262.

The previous prime is 133203241. The next prime is 133203269. The reversal of 133203263 is 362302331.

It is a strong prime.

It is an emirp because it is prime and its reverse (362302331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133203263 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133203269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66601631 + 66601632.

It is an arithmetic number, because the mean of its divisors is an integer number (66601632).

Almost surely, 2^133203263 is an apocalyptic number.

133203263 is a deficient number, since it is larger than the sum of its proper divisors (1).

133203263 is an equidigital number, since it uses as much as digits as its factorization.

133203263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 133203263 is about 11541.3717988808. The cubic root of 133203263 is about 510.7067773415.

Adding to 133203263 its reverse (362302331), we get a palindrome (495505594).

The spelling of 133203263 in words is "one hundred thirty-three million, two hundred three thousand, two hundred sixty-three".