43172361131 has 8 divisors (see below), whose sum is σ = 43210567680. Its totient is φ = 43134176448.

The previous prime is 43172361121. The next prime is 43172361143. The reversal of 43172361131 is 13116327134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43172361131 - 2¹⁸ = 43172098987 is a prime.

It is a super-2 number, since 2×43172361131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43172361121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8431190 + ... + 8436308.

It is an arithmetic number, because the mean of its divisors is an integer number (5401320960).

Almost surely, 2^43172361131 is an apocalyptic number.

43172361131 is a deficient number, since it is larger than the sum of its proper divisors (38206549).

43172361131 is a wasteful number, since it uses less digits than its factorization.

43172361131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10933.

The product of its digits is 9072, while the sum is 32.

Adding to 43172361131 its reverse (13116327134), we get a palindrome (56288688265).

The spelling of 43172361131 in words is "forty-three billion, one hundred seventy-two million, three hundred sixty-one thousand, one hundred thirty-one".