101023543 has 2 divisors, whose sum is σ = 101023544. Its totient is φ = 101023542.

The previous prime is 101023499. The next prime is 101023553. The reversal of 101023543 is 345320101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101023543 - 2¹³ = 101015351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101023543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101023553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50511771 + 50511772.

It is an arithmetic number, because the mean of its divisors is an integer number (50511772).

Almost surely, 2^101023543 is an apocalyptic number.

101023543 is a deficient number, since it is larger than the sum of its proper divisors (1).

101023543 is an equidigital number, since it uses as much as digits as its factorization.

101023543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 101023543 is about 10051.0468608996. The cubic root of 101023543 is about 465.7371327794.

Adding to 101023543 its reverse (345320101), we get a palindrome (446343644).

The spelling of 101023543 in words is "one hundred one million, twenty-three thousand, five hundred forty-three".