215028940343 has 4 divisors (see below), whose sum is σ = 245747360400. Its totient is φ = 184310520288.

The previous prime is 215028940319. The next prime is 215028940387. The reversal of 215028940343 is 343049820512.

215028940343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 215028940343 - 2¹² = 215028936247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215028940343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215028940543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15359210018 + ... + 15359210031.

It is an arithmetic number, because the mean of its divisors is an integer number (61436840100).

Almost surely, 2^215028940343 is an apocalyptic number.

215028940343 is a deficient number, since it is larger than the sum of its proper divisors (30718420057).

215028940343 is an equidigital number, since it uses as much as digits as its factorization.

215028940343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30718420056.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 215028940343 in words is "two hundred fifteen billion, twenty-eight million, nine hundred forty thousand, three hundred forty-three".