2157343 has 2 divisors, whose sum is σ = 2157344. Its totient is φ = 2157342.

The previous prime is 2157341. The next prime is 2157361. The reversal of 2157343 is 3437512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2157343 - 2¹ = 2157341 is a prime.

Together with 2157341, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 5 + 7³ + 3⁶ + 4³ + 3¹⁰ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078671 + 1078672.

It is an arithmetic number, because the mean of its divisors is an integer number (1078672).

2^2157343 is an apocalyptic number.

2157343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157343 is an equidigital number, since it uses as much as digits as its factorization.

2157343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 25.

The square root of 2157343 is about 1468.7896377630. The cubic root of 2157343 is about 129.2130565711.

It can be divided in two parts, 2157 and 343, that added together give a square (2500 = 50²).

The spelling of 2157343 in words is "two million, one hundred fifty-seven thousand, three hundred forty-three".