154431143243 has 12 divisors (see below), whose sum is σ = 168158502360. Its totient is φ = 141755417856.

The previous prime is 154431143221. The next prime is 154431143257. The reversal of 154431143243 is 342341134451.

It is not a de Polignac number, because 154431143243 - 2²² = 154426948939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154431143203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2522246 + ... + 2582747.

It is an arithmetic number, because the mean of its divisors is an integer number (14013208530).

Almost surely, 2^154431143243 is an apocalyptic number.

154431143243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

154431143243 is a deficient number, since it is larger than the sum of its proper divisors (13727359117).

154431143243 is a wasteful number, since it uses less digits than its factorization.

154431143243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105198 (or 5105185 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

Adding to 154431143243 its reverse (342341134451), we get a palindrome (496772277694).

The spelling of 154431143243 in words is "one hundred fifty-four billion, four hundred thirty-one million, one hundred forty-three thousand, two hundred forty-three".