2139323 has 2 divisors, whose sum is σ = 2139324. Its totient is φ = 2139322.

The previous prime is 2139311. The next prime is 2139337. The reversal of 2139323 is 3239312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2139323 - 2⁴ = 2139307 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 3³ + 9³ + 3⁹ + 2²¹ + 3⁹ .

It is not a weakly prime, because it can be changed into another prime (2139353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069661 + 1069662.

It is an arithmetic number, because the mean of its divisors is an integer number (1069662).

2^2139323 is an apocalyptic number.

2139323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139323 is an equidigital number, since it uses as much as digits as its factorization.

2139323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 23.

The square root of 2139323 is about 1462.6424716929. The cubic root of 2139323 is about 128.8522836937.

Adding to 2139323 its sum of digits (23), we get a triangular number (2139346 = T₂₀₆₈).

The spelling of 2139323 in words is "two million, one hundred thirty-nine thousand, three hundred twenty-three".