3111101020 has 12 divisors (see below), whose sum is σ = 6533312184. Its totient is φ = 1244440400.

The previous prime is 3111101011. The next prime is 3111101089. The reversal of 3111101020 is 201011113.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 3111100988 and 3111101006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77777506 + ... + 77777545.

It is an arithmetic number, because the mean of its divisors is an integer number (544442682).

Almost surely, 2^3111101020 is an apocalyptic number.

It is an amenable number.

3111101020 is an abundant number, since it is smaller than the sum of its proper divisors (3422211164).

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

3111101020 is a wasteful number, since it uses less digits than its factorization.

3111101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155555060 (or 155555058 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 3111101020 is about 55777.2446433131. The cubic root of 3111101020 is about 1459.8381349295.

Adding to 3111101020 its reverse (201011113), we get a palindrome (3312112133).

The spelling of 3111101020 in words is "three billion, one hundred eleven million, one hundred one thousand, twenty".