3123311302320 has 160 divisors (see below), whose sum is σ = 10569157530624. Its totient is φ = 756687052800.

The previous prime is 3123311302303. The next prime is 3123311302459. The reversal of 3123311302320 is 232031133213.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3805440 + ... + 4552800.

Almost surely, 2^{3123311302320} is an apocalyptic number.

3123311302320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3123311302320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5284578765312).

3123311302320 is an abundant number, since it is smaller than the sum of its proper divisors (7445846228304).

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

3123311302320 is a wasteful number, since it uses less digits than its factorization.

3123311302320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748971 (or 748965 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 3123311302320 its reverse (232031133213), we get a palindrome (3355342435533).

The spelling of 3123311302320 in words is "three trillion, one hundred twenty-three billion, three hundred eleven million, three hundred two thousand, three hundred twenty".