23531211010543 has 2 divisors, whose sum is σ = 23531211010544. Its totient is φ = 23531211010542.

The previous prime is 23531211010487. The next prime is 23531211010579. The reversal of 23531211010543 is 34501011213532.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23531211010543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23831211010543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11765605505271 + 11765605505272.

It is an arithmetic number, because the mean of its divisors is an integer number (11765605505272).

Almost surely, 2^{23531211010543} is an apocalyptic number.

23531211010543 is a deficient number, since it is larger than the sum of its proper divisors (1).

23531211010543 is an equidigital number, since it uses as much as digits as its factorization.

23531211010543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 23531211010543 in words is "twenty-three trillion, five hundred thirty-one billion, two hundred eleven million, ten thousand, five hundred forty-three".