2156343 has 12 divisors (see below), whose sum is σ = 3344760. Its totient is φ = 1232112.

The previous prime is 2156339. The next prime is 2156351. The reversal of 2156343 is 3436512.

It is a happy number.

It is not a de Polignac number, because 2156343 - 2² = 2156339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7188 + ... + 7481.

It is an arithmetic number, because the mean of its divisors is an integer number (278730).

2^2156343 is an apocalyptic number.

2156343 is a deficient number, since it is larger than the sum of its proper divisors (1188417).

2156343 is a wasteful number, since it uses less digits than its factorization.

2156343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14686 (or 14679 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 2156343 is about 1468.4491819603. The cubic root of 2156343 is about 129.1930886404.

The spelling of 2156343 in words is "two million, one hundred fifty-six thousand, three hundred forty-three".