3031220040 has 64 divisors (see below), whose sum is σ = 9221765760. Its totient is φ = 796938240.

The previous prime is 3031220039. The next prime is 3031220047. The reversal of 3031220040 is 400221303.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (3031220047) by changing a digit.

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, 169369 + ... + 186408.

It is an arithmetic number, because the mean of its divisors is an integer number (144090090).

Almost surely, 2^3031220040 is an apocalyptic number.

3031220040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3031220040 is an abundant number, since it is smaller than the sum of its proper divisors (6190545720).

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

3031220040 is a wasteful number, since it uses less digits than its factorization.

3031220040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355862 (or 355858 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3031220040 is about 55056.5167804866. The cubic root of 3031220040 is about 1447.2353249655.

Adding to 3031220040 its reverse (400221303), we get a palindrome (3431441343).

The spelling of 3031220040 in words is "three billion, thirty-one million, two hundred twenty thousand, forty".