3129223 has 2 divisors, whose sum is σ = 3129224. Its totient is φ = 3129222.

The previous prime is 3129221. The next prime is 3129253. The reversal of 3129223 is 3229213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3129223 - 2¹ = 3129221 is a prime.

Together with 3129221, it forms a pair of twin primes.

3129223 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3129194 and 3129203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3129221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564611 + 1564612.

It is an arithmetic number, because the mean of its divisors is an integer number (1564612).

Almost surely, 2^3129223 is an apocalyptic number.

3129223 is a deficient number, since it is larger than the sum of its proper divisors (1).

3129223 is an equidigital number, since it uses as much as digits as its factorization.

3129223 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 3129223 is about 1768.9609944824. The cubic root of 3129223 is about 146.2667139444.

The spelling of 3129223 in words is "three million, one hundred twenty-nine thousand, two hundred twenty-three".