2031224420 has 12 divisors (see below), whose sum is σ = 4265571324. Its totient is φ = 812489760.

The previous prime is 2031224401. The next prime is 2031224477. The reversal of 2031224420 is 244221302.

It can be written as a sum of positive squares in 2 ways, for example, as 258309184 + 1772915236 = 16072^2 + 42106^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 101561221 = 2031224420 / (2 + 0 + 3 + 1 + 2 + 2 + 4 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2031224392 and 2031224401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50780591 + ... + 50780630.

It is an arithmetic number, because the mean of its divisors is an integer number (355464277).

Almost surely, 2^2031224420 is an apocalyptic number.

2031224420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031224420 is an abundant number, since it is smaller than the sum of its proper divisors (2234346904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2031224420 is a wasteful number, since it uses less digits than its factorization.

2031224420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101561230 (or 101561228 counting only the distinct ones).

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

The square root of 2031224420 is about 45069.1071577860. The cubic root of 2031224420 is about 1266.4439385237.

Adding to 2031224420 its reverse (244221302), we get a palindrome (2275445722).

The spelling of 2031224420 in words is "two billion, thirty-one million, two hundred twenty-four thousand, four hundred twenty".