423541633 has 2 divisors, whose sum is σ = 423541634. Its totient is φ = 423541632.

The previous prime is 423541609. The next prime is 423541637. The reversal of 423541633 is 336145324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300398224 + 123143409 = 17332^2 + 11097^2 .

It is a cyclic number.

It is not a de Polignac number, because 423541633 - 2²⁵ = 389987201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423541595 and 423541604.

It is not a weakly prime, because it can be changed into another prime (423541637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211770816 + 211770817.

It is an arithmetic number, because the mean of its divisors is an integer number (211770817).

Almost surely, 2^423541633 is an apocalyptic number.

It is an amenable number.

423541633 is a deficient number, since it is larger than the sum of its proper divisors (1).

423541633 is an equidigital number, since it uses as much as digits as its factorization.

423541633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 31.

The square root of 423541633 is about 20580.1271376053. The cubic root of 423541633 is about 750.9863366551.

Adding to 423541633 its reverse (336145324), we get a palindrome (759686957).

The spelling of 423541633 in words is "four hundred twenty-three million, five hundred forty-one thousand, six hundred thirty-three".