20110311020 has 24 divisors (see below), whose sum is σ = 42250761168. Its totient is φ = 8040484800.

The previous prime is 20110311017. The next prime is 20110311047. The reversal of 20110311020 is 2011301102.

It is a super-2 number, since 2×20110311020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110310992 and 20110311010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181946 + ... + 270785.

It is an arithmetic number, because the mean of its divisors is an integer number (1760448382).

Almost surely, 2^20110311020 is an apocalyptic number.

20110311020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110311020 is an abundant number, since it is smaller than the sum of its proper divisors (22140450148).

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

20110311020 is a wasteful number, since it uses less digits than its factorization.

20110311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454961 (or 454959 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20110311020 its reverse (2011301102), we get a palindrome (22121612122).

The spelling of 20110311020 in words is "twenty billion, one hundred ten million, three hundred eleven thousand, twenty".