43121041313 has 32 divisors (see below), whose sum is σ = 51690700800. Its totient is φ = 35201525184.

The previous prime is 43121041279. The next prime is 43121041333. The reversal of 43121041313 is 31314012134.

43121041313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43121041313 - 2³⁴ = 25941172129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43121041333) 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, 3646256 + ... + 3658062.

It is an arithmetic number, because the mean of its divisors is an integer number (1615334400).

Almost surely, 2^43121041313 is an apocalyptic number.

It is an amenable number.

43121041313 is a deficient number, since it is larger than the sum of its proper divisors (8569659487).

43121041313 is a wasteful number, since it uses less digits than its factorization.

43121041313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12149.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 43121041313 its reverse (31314012134), we get a palindrome (74435053447).

The spelling of 43121041313 in words is "forty-three billion, one hundred twenty-one million, forty-one thousand, three hundred thirteen".