101340643 has 16 divisors (see below), whose sum is σ = 108767232. Its totient is φ = 94248000.

The previous prime is 101340559. The next prime is 101340667. The reversal of 101340643 is 346043101.

It is a cyclic number.

It is not a de Polignac number, because 101340643 - 2¹⁷ = 101209571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101340143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89680 + ... + 90802.

It is an arithmetic number, because the mean of its divisors is an integer number (6797952).

Almost surely, 2^101340643 is an apocalyptic number.

101340643 is a deficient number, since it is larger than the sum of its proper divisors (7426589).

101340643 is a wasteful number, since it uses less digits than its factorization.

101340643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 101340643 is about 10066.8089780228. The cubic root of 101340643 is about 466.2239202734.

Adding to 101340643 its reverse (346043101), we get a palindrome (447383744).

The spelling of 101340643 in words is "one hundred one million, three hundred forty thousand, six hundred forty-three".