10311100020 has 72 divisors (see below), whose sum is σ = 33682934376. Its totient is φ = 2538116352.

The previous prime is 10311100003. The next prime is 10311100067. The reversal of 10311100020 is 2000111301.

It can be written as a sum of positive squares in 4 ways, for example, as 772061796 + 9539038224 = 27786^2 + 97668^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10311099975 and 10311100011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2200887 + ... + 2205566.

It is an arithmetic number, because the mean of its divisors is an integer number (467818533).

Almost surely, 2^10311100020 is an apocalyptic number.

10311100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10311100020 is an abundant number, since it is smaller than the sum of its proper divisors (23371834356).

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

10311100020 is a wasteful number, since it uses less digits than its factorization.

10311100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406481 (or 4406476 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 10311100020 its reverse (2000111301), we get a palindrome (12311211321).

The spelling of 10311100020 in words is "ten billion, three hundred eleven million, one hundred thousand, twenty".