303213022020 has 144 divisors (see below), whose sum is σ = 932015185920. Its totient is φ = 79780704768.

The previous prime is 303213021997. The next prime is 303213022039. The reversal of 303213022020 is 20220312303.

It is a happy number.

303213022020 is a `hidden beast` number, since 3 + 0 + 321 + 302 + 20 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 303213021984 and 303213022002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12073917 + ... + 12099003.

It is an arithmetic number, because the mean of its divisors is an integer number (6472327680).

Almost surely, 2^303213022020 is an apocalyptic number.

303213022020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303213022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466007592960).

303213022020 is an abundant number, since it is smaller than the sum of its proper divisors (628802163900).

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

303213022020 is a wasteful number, since it uses less digits than its factorization.

303213022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25994 (or 25989 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 303213022020 its reverse (20220312303), we get a palindrome (323433334323).

The spelling of 303213022020 in words is "three hundred three billion, two hundred thirteen million, twenty-two thousand, twenty".