133223413 has 2 divisors, whose sum is σ = 133223414. Its totient is φ = 133223412.

The previous prime is 133223411. The next prime is 133223423. The reversal of 133223413 is 314322331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133125444 + 97969 = 11538^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 133223413 - 2¹ = 133223411 is a prime.

Together with 133223411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133223411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66611706 + 66611707.

It is an arithmetic number, because the mean of its divisors is an integer number (66611707).

Almost surely, 2^133223413 is an apocalyptic number.

It is an amenable number.

133223413 is a deficient number, since it is larger than the sum of its proper divisors (1).

133223413 is an equidigital number, since it uses as much as digits as its factorization.

133223413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 22.

The square root of 133223413 is about 11542.2447123599. The cubic root of 133223413 is about 510.7325280188.

Adding to 133223413 its reverse (314322331), we get a palindrome (447545744).

The spelling of 133223413 in words is "one hundred thirty-three million, two hundred twenty-three thousand, four hundred thirteen".