2331121232040 has 256 divisors, whose sum is σ = 7633543680000. Its totient is φ = 567243629568.

The previous prime is 2331121232023. The next prime is 2331121232057. The reversal of 2331121232040 is 402321211332.

It is an interprime number because it is at equal distance from previous prime (2331121232023) and next prime (2331121232057).

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 2331121232040.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27662209 + ... + 27746351.

It is an arithmetic number, because the mean of its divisors is an integer number (29818530000).

Almost surely, 2^{2331121232040} is an apocalyptic number.

2331121232040 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 2331121232040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3816771840000).

2331121232040 is an abundant number, since it is smaller than the sum of its proper divisors (5302422447960).

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

2331121232040 is a wasteful number, since it uses less digits than its factorization.

2331121232040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84624 (or 84620 counting only the distinct ones).

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

Adding to 2331121232040 its reverse (402321211332), we get a palindrome (2733442443372).

The spelling of 2331121232040 in words is "two trillion, three hundred thirty-one billion, one hundred twenty-one million, two hundred thirty-two thousand, forty".