2311304123040 has 192 divisors, whose sum is σ = 7978102013952. Its totient is φ = 557803238400.

The previous prime is 2311304122997. The next prime is 2311304123047. The reversal of 2311304123040 is 403214031132.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2311304123040.

It is not an unprimeable number, because it can be changed into a prime (2311304123047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195945 + ... + 2158935.

It is an arithmetic number, because the mean of its divisors is an integer number (41552614656).

Almost surely, 2^{2311304123040} is an apocalyptic number.

2311304123040 is a gapful number since it is divisible by the number (20) 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 2311304123040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3989051006976).

2311304123040 is an abundant number, since it is smaller than the sum of its proper divisors (5666797890912).

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

2311304123040 is a wasteful number, since it uses less digits than its factorization.

2311304123040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963243 (or 1963235 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2311304123040 its reverse (403214031132), we get a palindrome (2714518154172).

The spelling of 2311304123040 in words is "two trillion, three hundred eleven billion, three hundred four million, one hundred twenty-three thousand, forty".