43101331311131 has 4 divisors (see below), whose sum is σ = 43119742817664. Its totient is φ = 43082919804600.

The previous prime is 43101331311119. The next prime is 43101331311191. The reversal of 43101331311131 is 13111313310134.

It is a happy number.

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 43101331311131 - 2¹⁸ = 43101331048987 is a prime.

It is a super-2 number, since 2×43101331311131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43101331311131.

It is not an unprimeable number, because it can be changed into a prime (43101331311191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9205749755 + ... + 9205754436.

It is an arithmetic number, because the mean of its divisors is an integer number (10779935704416).

Almost surely, 2^{43101331311131} is an apocalyptic number.

43101331311131 is a deficient number, since it is larger than the sum of its proper divisors (18411506533).

43101331311131 is a wasteful number, since it uses less digits than its factorization.

43101331311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18411506532.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 43101331311131 its reverse (13111313310134), we get a palindrome (56212644621265).

The spelling of 43101331311131 in words is "forty-three trillion, one hundred one billion, three hundred thirty-one million, three hundred eleven thousand, one hundred thirty-one".