231551542313443 has 8 divisors (see below), whose sum is σ = 252602065010736. Its totient is φ = 210501083364000.

The previous prime is 231551542313401. The next prime is 231551542313449. The reversal of 231551542313443 is 344313245155132.

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

It is not a de Polignac number, because 231551542313443 - 2¹⁷ = 231551542182371 is a prime.

It is a super-2 number, since 2×231551542313443² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231551542313393 and 231551542313402.

It is not an unprimeable number, because it can be changed into a prime (231551542313449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8177896 + ... + 23021317.

It is an arithmetic number, because the mean of its divisors is an integer number (31575258126342).

Almost surely, 2^{231551542313443} is an apocalyptic number.

231551542313443 is a deficient number, since it is larger than the sum of its proper divisors (21050522697293).

231551542313443 is a wasteful number, since it uses less digits than its factorization.

231551542313443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31873925.

The product of its digits is 2592000, while the sum is 46.

Adding to 231551542313443 its reverse (344313245155132), we get a palindrome (575864787468575).

The spelling of 231551542313443 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, five hundred forty-two million, three hundred thirteen thousand, four hundred forty-three".