431220303020 has 96 divisors (see below), whose sum is σ = 998482132032. Its totient is φ = 155426439168.

The previous prime is 431220303011. The next prime is 431220303023. The reversal of 431220303020 is 20303022134.

It is a super-2 number, since 2×431220303020² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 431220302983 and 431220303001.

It is not an unprimeable number, because it can be changed into a prime (431220303023) 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, 20929844 + ... + 20950436.

It is an arithmetic number, because the mean of its divisors is an integer number (10400855542).

Almost surely, 2^431220303020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431220303020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499241066016).

431220303020 is an abundant number, since it is smaller than the sum of its proper divisors (567261829012).

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

431220303020 is a wasteful number, since it uses less digits than its factorization.

431220303020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22531 (or 22529 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 431220303020 its reverse (20303022134), we get a palindrome (451523325154).

The spelling of 431220303020 in words is "four hundred thirty-one billion, two hundred twenty million, three hundred three thousand, twenty".