2231515543 has 2 divisors, whose sum is σ = 2231515544. Its totient is φ = 2231515542.

The previous prime is 2231515541. The next prime is 2231515549. The reversal of 2231515543 is 3455151322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2231515543 - 2¹ = 2231515541 is a prime.

It is a super-3 number, since 3×2231515543³ (a number of 29 digits) contains 333 as substring.

Together with 2231515541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231515541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115757771 + 1115757772.

It is an arithmetic number, because the mean of its divisors is an integer number (1115757772).

Almost surely, 2^2231515543 is an apocalyptic number.

2231515543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231515543 is an equidigital number, since it uses as much as digits as its factorization.

2231515543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 31.

The square root of 2231515543 is about 47238.9197907827. The cubic root of 2231515543 is about 1306.7724564740.

Adding to 2231515543 its reverse (3455151322), we get a palindrome (5686666865).

The spelling of 2231515543 in words is "two billion, two hundred thirty-one million, five hundred fifteen thousand, five hundred forty-three".