2851231 has 2 divisors, whose sum is σ = 2851232. Its totient is φ = 2851230.

The previous prime is 2851187. The next prime is 2851249. The reversal of 2851231 is 1321582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2851231 - 2⁹ = 2850719 is a prime.

It is a super-2 number, since 2×2851231² = 16259036430722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2855231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425615 + 1425616.

It is an arithmetic number, because the mean of its divisors is an integer number (1425616).

2^2851231 is an apocalyptic number.

2851231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851231 is an equidigital number, since it uses as much as digits as its factorization.

2851231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 2851231 is about 1688.5588529868. The cubic root of 2851231 is about 141.8004039661.

The spelling of 2851231 in words is "two million, eight hundred fifty-one thousand, two hundred thirty-one".