3109215540 has 48 divisors (see below), whose sum is σ = 8750028672. Its totient is φ = 824912256.

The previous prime is 3109215539. The next prime is 3109215589. The reversal of 3109215540 is 455129013.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3109215498 and 3109215507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119704 + ... + 143343.

It is an arithmetic number, because the mean of its divisors is an integer number (182292264).

Almost surely, 2^3109215540 is an apocalyptic number.

3109215540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3109215540 is an abundant number, since it is smaller than the sum of its proper divisors (5640813132).

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

3109215540 is a wasteful number, since it uses less digits than its factorization.

3109215540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263256 (or 263254 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 3109215540 is about 55760.3402069966. The cubic root of 3109215540 is about 1459.5431641324.

The spelling of 3109215540 in words is "three billion, one hundred nine million, two hundred fifteen thousand, five hundred forty".