2312340401240 has 64 divisors (see below), whose sum is σ = 5349476995200. Its totient is φ = 898911226368.

The previous prime is 2312340401221. The next prime is 2312340401243. The reversal of 2312340401240 is 421040432132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312340401243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407201 + ... + 2188719.

It is an arithmetic number, because the mean of its divisors is an integer number (83585578050).

Almost surely, 2^{2312340401240} is an apocalyptic number.

2312340401240 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 2312340401240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674738497600).

2312340401240 is an abundant number, since it is smaller than the sum of its proper divisors (3037136593960).

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

2312340401240 is a wasteful number, since it uses less digits than its factorization.

2312340401240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782444 (or 1782440 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 2312340401240 its reverse (421040432132), we get a palindrome (2733380833372).

The spelling of 2312340401240 in words is "two trillion, three hundred twelve billion, three hundred forty million, four hundred one thousand, two hundred forty".