312303533543 has 2 divisors, whose sum is σ = 312303533544. Its totient is φ = 312303533542.

The previous prime is 312303533497. The next prime is 312303533587. The reversal of 312303533543 is 345335303213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312303533543 - 2⁸ = 312303533287 is a prime.

It is a super-2 number, since 2×312303533543² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312303533743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156151766771 + 156151766772.

It is an arithmetic number, because the mean of its divisors is an integer number (156151766772).

Almost surely, 2^312303533543 is an apocalyptic number.

312303533543 is a deficient number, since it is larger than the sum of its proper divisors (1).

312303533543 is an equidigital number, since it uses as much as digits as its factorization.

312303533543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 35.

Adding to 312303533543 its reverse (345335303213), we get a palindrome (657638836756).

The spelling of 312303533543 in words is "three hundred twelve billion, three hundred three million, five hundred thirty-three thousand, five hundred forty-three".