43154531231 has 12 divisors (see below), whose sum is σ = 50835618720. Its totient is φ = 36521372160.

The previous prime is 43154531183. The next prime is 43154531237. The reversal of 43154531231 is 13213545134.

It is not a de Polignac number, because 43154531231 - 2³⁰ = 42080789407 is a prime.

It is a super-2 number, since 2×43154531231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43154531237) 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 11 ways as a sum of consecutive naturals, for example, 5570210 + ... + 5577951.

It is an arithmetic number, because the mean of its divisors is an integer number (4236301560).

Almost surely, 2^43154531231 is an apocalyptic number.

43154531231 is a deficient number, since it is larger than the sum of its proper divisors (7681087489).

43154531231 is a wasteful number, since it uses less digits than its factorization.

43154531231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11148254 (or 11148247 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The spelling of 43154531231 in words is "forty-three billion, one hundred fifty-four million, five hundred thirty-one thousand, two hundred thirty-one".