11311343043 has 64 divisors (see below), whose sum is σ = 20271562752. Its totient is φ = 5418161280.

The previous prime is 11311342997. The next prime is 11311343059. The reversal of 11311343043 is 34034311311.

It is not a de Polignac number, because 11311343043 - 2⁹ = 11311342531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11311343063) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4271946 + ... + 4274592.

It is an arithmetic number, because the mean of its divisors is an integer number (316743168).

Almost surely, 2^11311343043 is an apocalyptic number.

11311343043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11311343043 is a deficient number, since it is larger than the sum of its proper divisors (8960219709).

11311343043 is a wasteful number, since it uses less digits than its factorization.

11311343043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 11311343043 its reverse (34034311311), we get a palindrome (45345654354).

The spelling of 11311343043 in words is "eleven billion, three hundred eleven million, three hundred forty-three thousand, forty-three".