3112540220 has 24 divisors (see below), whose sum is σ = 6675407424. Its totient is φ = 1218526016.

The previous prime is 3112540177. The next prime is 3112540231. The reversal of 3112540220 is 220452113.

It is a super-2 number, since 2×3112540220² = 19375813242235296800, which contains 22 as substring.

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 = 3112540192 and 3112540201.

It is a congruent number.

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, 1654667 + ... + 1656546.

It is an arithmetic number, because the mean of its divisors is an integer number (278141976).

Almost surely, 2^3112540220 is an apocalyptic number.

It is an amenable number.

3112540220 is an abundant number, since it is smaller than the sum of its proper divisors (3562867204).

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

3112540220 is a wasteful number, since it uses less digits than its factorization.

3112540220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311269 (or 3311267 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 3112540220 is about 55790.1444701481. The cubic root of 3112540220 is about 1460.0632079972.

Adding to 3112540220 its reverse (220452113), we get a palindrome (3332992333).

The spelling of 3112540220 in words is "three billion, one hundred twelve million, five hundred forty thousand, two hundred twenty".