422403031 has 4 divisors (see below), whose sum is σ = 422455464. Its totient is φ = 422350600.

The previous prime is 422403011. The next prime is 422403043. The reversal of 422403031 is 130304224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422403031 is a prime.

It is a super-2 number, since 2×422403031² = 356848641195973922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422403011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11305 + ... + 31186.

It is an arithmetic number, because the mean of its divisors is an integer number (105613866).

Almost surely, 2^422403031 is an apocalyptic number.

422403031 is a deficient number, since it is larger than the sum of its proper divisors (52433).

422403031 is an equidigital number, since it uses as much as digits as its factorization.

422403031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52432.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 422403031 is about 20552.4458641788. The cubic root of 422403031 is about 750.3127768020.

Adding to 422403031 its reverse (130304224), we get a palindrome (552707255).

The spelling of 422403031 in words is "four hundred twenty-two million, four hundred three thousand, thirty-one".