231545430130343 has 4 divisors (see below), whose sum is σ = 264623348720400. Its totient is φ = 198467511540288.

The previous prime is 231545430130283. The next prime is 231545430130397. The reversal of 231545430130343 is 343031034545132.

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 231545430130343 - 2¹⁶ = 231545430064807 is a prime.

It is a super-2 number, since 2×231545430130343² (a number of 30 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 231545430130343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231545430130643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16538959295018 + ... + 16538959295031.

It is an arithmetic number, because the mean of its divisors is an integer number (66155837180100).

Almost surely, 2^{231545430130343} is an apocalyptic number.

231545430130343 is a deficient number, since it is larger than the sum of its proper divisors (33077918590057).

231545430130343 is an equidigital number, since it uses as much as digits as its factorization.

231545430130343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33077918590056.

The product of its (nonzero) digits is 777600, while the sum is 41.

Adding to 231545430130343 its reverse (343031034545132), we get a palindrome (574576464675475).

The spelling of 231545430130343 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty million, one hundred thirty thousand, three hundred forty-three".