20347343 has 4 divisors (see below), whose sum is σ = 20680968. Its totient is φ = 20013720.

The previous prime is 20347339. The next prime is 20347361. The reversal of 20347343 is 34374302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34374302 = 2 ⋅17187151.

It is a cyclic number.

It is not a de Polignac number, because 20347343 - 2² = 20347339 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20347303) 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, 166721 + ... + 166842.

It is an arithmetic number, because the mean of its divisors is an integer number (5170242).

Almost surely, 2^20347343 is an apocalyptic number.

20347343 is a deficient number, since it is larger than the sum of its proper divisors (333625).

20347343 is an equidigital number, since it uses as much as digits as its factorization.

20347343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333624.

The product of its (nonzero) digits is 6048, while the sum is 26.

The square root of 20347343 is about 4510.8029218754. The cubic root of 20347343 is about 273.0041415018.

The spelling of 20347343 in words is "twenty million, three hundred forty-seven thousand, three hundred forty-three".