101912543 has 2 divisors, whose sum is σ = 101912544. Its totient is φ = 101912542.

The previous prime is 101912509. The next prime is 101912549. The reversal of 101912543 is 345219101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101912543 - 2¹⁰ = 101911519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101912549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50956271 + 50956272.

It is an arithmetic number, because the mean of its divisors is an integer number (50956272).

Almost surely, 2^101912543 is an apocalyptic number.

101912543 is a deficient number, since it is larger than the sum of its proper divisors (1).

101912543 is an equidigital number, since it uses as much as digits as its factorization.

101912543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 101912543 is about 10095.1742431718. The cubic root of 101912543 is about 467.0992961368.

The spelling of 101912543 in words is "one hundred one million, nine hundred twelve thousand, five hundred forty-three".