423221531451 has 16 divisors (see below), whose sum is σ = 597810413088. Its totient is φ = 265408012800.

The previous prime is 423221531393. The next prime is 423221531479. The reversal of 423221531451 is 154135122324.

It is not a de Polignac number, because 423221531451 - 2⁷ = 423221531323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423221538451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2134660 + ... + 2324481.

It is an arithmetic number, because the mean of its divisors is an integer number (37363150818).

Almost surely, 2^423221531451 is an apocalyptic number.

423221531451 is a deficient number, since it is larger than the sum of its proper divisors (174588881637).

423221531451 is a wasteful number, since it uses less digits than its factorization.

423221531451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461022.

The product of its digits is 28800, while the sum is 33.

Adding to 423221531451 its reverse (154135122324), we get a palindrome (577356653775).

The spelling of 423221531451 in words is "four hundred twenty-three billion, two hundred twenty-one million, five hundred thirty-one thousand, four hundred fifty-one".