20101343 has 4 divisors (see below), whose sum is σ = 20155608. Its totient is φ = 20047080.

The previous prime is 20101331. The next prime is 20101349. The reversal of 20101343 is 34310102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34310102 = 2 ⋅17155051.

It is a cyclic number.

It is not a de Polignac number, because 20101343 - 2²⁴ = 3324127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26573 + ... + 27318.

It is an arithmetic number, because the mean of its divisors is an integer number (5038902).

Almost surely, 2^20101343 is an apocalyptic number.

20101343 is a deficient number, since it is larger than the sum of its proper divisors (54265).

20101343 is an equidigital number, since it uses as much as digits as its factorization.

20101343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54264.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20101343 is about 4483.4521297768. The cubic root of 20101343 is about 271.8994681462.

Adding to 20101343 its reverse (34310102), we get a palindrome (54411445).

The spelling of 20101343 in words is "twenty million, one hundred one thousand, three hundred forty-three".