101431543 has 2 divisors, whose sum is σ = 101431544. Its totient is φ = 101431542.

The previous prime is 101431511. The next prime is 101431553. The reversal of 101431543 is 345134101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101431543 - 2⁵ = 101431511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101431553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50715771 + 50715772.

It is an arithmetic number, because the mean of its divisors is an integer number (50715772).

Almost surely, 2^101431543 is an apocalyptic number.

101431543 is a deficient number, since it is larger than the sum of its proper divisors (1).

101431543 is an equidigital number, since it uses as much as digits as its factorization.

101431543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 101431543 is about 10071.3228028894. The cubic root of 101431543 is about 466.3632756469.

Adding to 101431543 its reverse (345134101), we get a palindrome (446565644).

The spelling of 101431543 in words is "one hundred one million, four hundred thirty-one thousand, five hundred forty-three".