423441431 has 32 divisors (see below), whose sum is σ = 535584768. Its totient is φ = 326747520.

The previous prime is 423441427. The next prime is 423441437. The reversal of 423441431 is 134144324.

It is a cyclic number.

It is not a de Polignac number, because 423441431 - 2² = 423441427 is a prime.

It is a super-2 number, since 2×423441431² = 358605290974655522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423441431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423441437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183521 + ... + 185813.

It is an arithmetic number, because the mean of its divisors is an integer number (16737024).

Almost surely, 2^423441431 is an apocalyptic number.

423441431 is a deficient number, since it is larger than the sum of its proper divisors (112143337).

423441431 is a wasteful number, since it uses less digits than its factorization.

423441431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its digits is 4608, while the sum is 26.

The square root of 423441431 is about 20577.6925577189. The cubic root of 423441431 is about 750.9271088940.

Adding to 423441431 its reverse (134144324), we get a palindrome (557585755).

The spelling of 423441431 in words is "four hundred twenty-three million, four hundred forty-one thousand, four hundred thirty-one".