2400131211243 has 4 divisors (see below), whose sum is σ = 3200174948328. Its totient is φ = 1600087474160.

The previous prime is 2400131211241. The next prime is 2400131211253. The reversal of 2400131211243 is 3421121310042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2400131211243 - 2¹ = 2400131211241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2400131211241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400021868538 + ... + 400021868543.

It is an arithmetic number, because the mean of its divisors is an integer number (800043737082).

Almost surely, 2^{2400131211243} is an apocalyptic number.

2400131211243 is a deficient number, since it is larger than the sum of its proper divisors (800043737085).

2400131211243 is an equidigital number, since it uses as much as digits as its factorization.

2400131211243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800043737084.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 2400131211243 its reverse (3421121310042), we get a palindrome (5821252521285).

The spelling of 2400131211243 in words is "two trillion, four hundred billion, one hundred thirty-one million, two hundred eleven thousand, two hundred forty-three".