623530133 has 2 divisors, whose sum is σ = 623530134. Its totient is φ = 623530132.

The previous prime is 623530129. The next prime is 623530139. The reversal of 623530133 is 331035326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 456164164 + 167365969 = 21358^2 + 12937^2 .

It is a cyclic number.

It is not a de Polignac number, because 623530133 - 2² = 623530129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623530139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311765066 + 311765067.

It is an arithmetic number, because the mean of its divisors is an integer number (311765067).

Almost surely, 2^623530133 is an apocalyptic number.

It is an amenable number.

623530133 is a deficient number, since it is larger than the sum of its proper divisors (1).

623530133 is an equidigital number, since it uses as much as digits as its factorization.

623530133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 26.

The square root of 623530133 is about 24970.5853555739. The cubic root of 623530133 is about 854.3171972984.

Adding to 623530133 its reverse (331035326), we get a palindrome (954565459).

The spelling of 623530133 in words is "six hundred twenty-three million, five hundred thirty thousand, one hundred thirty-three".