3100809820 has 12 divisors (see below), whose sum is σ = 6511700664. Its totient is φ = 1240323920.

The previous prime is 3100809797. The next prime is 3100809821. The reversal of 3100809820 is 289080013.

3100809820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3100809821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77520226 + ... + 77520265.

It is an arithmetic number, because the mean of its divisors is an integer number (542641722).

Almost surely, 2^3100809820 is an apocalyptic number.

It is an amenable number.

3100809820 is an abundant number, since it is smaller than the sum of its proper divisors (3410890844).

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

3100809820 is a wasteful number, since it uses less digits than its factorization.

3100809820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155040500 (or 155040498 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 3100809820 is about 55684.9155517004. The cubic root of 3100809820 is about 1458.2266923345.

Adding to 3100809820 its reverse (289080013), we get a palindrome (3389889833).

The spelling of 3100809820 in words is "three billion, one hundred million, eight hundred nine thousand, eight hundred twenty".