2154281343 has 4 divisors (see below), whose sum is σ = 2872375128. Its totient is φ = 1436187560.

The previous prime is 2154281329. The next prime is 2154281369. The reversal of 2154281343 is 3431824512.

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 2154281343 - 2⁹ = 2154280831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154281323) 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, 359046888 + ... + 359046893.

It is an arithmetic number, because the mean of its divisors is an integer number (718093782).

Almost surely, 2^2154281343 is an apocalyptic number.

2154281343 is a deficient number, since it is larger than the sum of its proper divisors (718093785).

2154281343 is an equidigital number, since it uses as much as digits as its factorization.

2154281343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718093784.

The product of its digits is 23040, while the sum is 33.

The square root of 2154281343 is about 46414.2364259071. The cubic root of 2154281343 is about 1291.5190212443.

The spelling of 2154281343 in words is "two billion, one hundred fifty-four million, two hundred eighty-one thousand, three hundred forty-three".