2891323 has 2 divisors, whose sum is σ = 2891324. Its totient is φ = 2891322.

The previous prime is 2891303. The next prime is 2891341. The reversal of 2891323 is 3231982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2891323 is a prime.

It is equal to p₂₀₉₅₃₉ and since 2891323 and 209539 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 2891291 and 2891300.

It is not a weakly prime, because it can be changed into another prime (2891303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445661 + 1445662.

It is an arithmetic number, because the mean of its divisors is an integer number (1445662).

2^2891323 is an apocalyptic number.

2891323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891323 is an equidigital number, since it uses as much as digits as its factorization.

2891323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 2891323 is about 1700.3890731241. The cubic root of 2891323 is about 142.4619453119.

The spelling of 2891323 in words is "two million, eight hundred ninety-one thousand, three hundred twenty-three".