2220420431 has 8 divisors (see below), whose sum is σ = 2282860944. Its totient is φ = 2158107840.

The previous prime is 2220420407. The next prime is 2220420457. The reversal of 2220420431 is 1340240222.

2220420431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2220420431 - 2³⁰ = 1146678607 is a prime.

It is a super-2 number, since 2×2220420431² = 9860533780804451522, 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 (2220450431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3776 + ... + 66746.

It is an arithmetic number, because the mean of its divisors is an integer number (285357618).

Almost surely, 2^2220420431 is an apocalyptic number.

2220420431 is a deficient number, since it is larger than the sum of its proper divisors (62440513).

2220420431 is an equidigital number, since it uses as much as digits as its factorization.

2220420431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63961.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2220420431 is about 47121.3373218545. The cubic root of 2220420431 is about 1304.6030963183.

Adding to 2220420431 its reverse (1340240222), we get a palindrome (3560660653).

The spelling of 2220420431 in words is "two billion, two hundred twenty million, four hundred twenty thousand, four hundred thirty-one".