422320031 has 4 divisors (see below), whose sum is σ = 482651472. Its totient is φ = 361988592.

The previous prime is 422320021. The next prime is 422320033. The reversal of 422320031 is 130023224.

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

It is a de Polignac number, because none of the positive numbers 2^k-422320031 is a prime.

It is a super-2 number, since 2×422320031² = 356708417167681922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422319991 and 422320009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422320033) 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, 30165710 + ... + 30165723.

It is an arithmetic number, because the mean of its divisors is an integer number (120662868).

Almost surely, 2^422320031 is an apocalyptic number.

422320031 is a deficient number, since it is larger than the sum of its proper divisors (60331441).

422320031 is an equidigital number, since it uses as much as digits as its factorization.

422320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60331440.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 422320031 is about 20550.4265405855. The cubic root of 422320031 is about 750.2636293959.

Adding to 422320031 its reverse (130023224), we get a palindrome (552343255).

The spelling of 422320031 in words is "four hundred twenty-two million, three hundred twenty thousand, thirty-one".