2311013032220 has 48 divisors (see below), whose sum is σ = 4875501066240. Its totient is φ = 920144598336.

The previous prime is 2311013032213. The next prime is 2311013032243. The reversal of 2311013032220 is 222303101132.

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 = 2311013032192 and 2311013032201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41534939 + ... + 41590541.

It is an arithmetic number, because the mean of its divisors is an integer number (101572938880).

Almost surely, 2^{2311013032220} is an apocalyptic number.

2311013032220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311013032220 is an abundant number, since it is smaller than the sum of its proper divisors (2564488034020).

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

2311013032220 is a wasteful number, since it uses less digits than its factorization.

2311013032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65154 (or 65152 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2311013032220 its reverse (222303101132), we get a palindrome (2533316133352).

The spelling of 2311013032220 in words is "two trillion, three hundred eleven billion, thirteen million, thirty-two thousand, two hundred twenty".