3123303340240 has 40 divisors (see below), whose sum is σ = 7261863414120. Its totient is φ = 1249289826816.

The previous prime is 3123303340211. The next prime is 3123303340331. The reversal of 3123303340240 is 420433033213.

It is a happy number.

3123303340240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 222263216704 + 2901040123536 = 471448^2 + 1703244^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3123303340199 and 3123303340208.

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, 2839482 + ... + 3782758.

It is an arithmetic number, because the mean of its divisors is an integer number (181546585353).

Almost surely, 2^{3123303340240} is an apocalyptic number.

It is an amenable number.

3123303340240 is an abundant number, since it is smaller than the sum of its proper divisors (4138560073880).

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

3123303340240 is a wasteful number, since it uses less digits than its factorization.

3123303340240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984679 (or 984673 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 3123303340240 its reverse (420433033213), we get a palindrome (3543736373453).

The spelling of 3123303340240 in words is "three trillion, one hundred twenty-three billion, three hundred three million, three hundred forty thousand, two hundred forty".