20311302020 has 12 divisors (see below), whose sum is σ = 42653734284. Its totient is φ = 8124520800.

The previous prime is 20311302013. The next prime is 20311302059. The reversal of 20311302020 is 2020311302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14934306436 + 5376995584 = 122206^2 + 73328^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20311301986 and 20311302004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507782531 + ... + 507782570.

It is an arithmetic number, because the mean of its divisors is an integer number (3554477857).

Almost surely, 2^20311302020 is an apocalyptic number.

20311302020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311302020 is an abundant number, since it is smaller than the sum of its proper divisors (22342432264).

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

20311302020 is a wasteful number, since it uses less digits than its factorization.

20311302020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015565110 (or 1015565108 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20311302020 its reverse (2020311302), we get a palindrome (22331613322).

The spelling of 20311302020 in words is "twenty billion, three hundred eleven million, three hundred two thousand, twenty".