2931223 has 2 divisors, whose sum is σ = 2931224. Its totient is φ = 2931222.

The previous prime is 2931221. The next prime is 2931241. The reversal of 2931223 is 3221392.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2931223 - 2¹ = 2931221 is a prime.

Together with 2931221, it forms a pair of twin primes.

2931223 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2931194 and 2931203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2931221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1465611 + 1465612.

It is an arithmetic number, because the mean of its divisors is an integer number (1465612).

2^2931223 is an apocalyptic number.

2931223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2931223 is an equidigital number, since it uses as much as digits as its factorization.

2931223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 2931223 is about 1712.0814817058. The cubic root of 2931223 is about 143.1142744771.

It can be divided in two parts, 2 and 931223, that added together give a square (931225 = 965²).

The spelling of 2931223 in words is "two million, nine hundred thirty-one thousand, two hundred twenty-three".