1305249223 has 2 divisors, whose sum is σ = 1305249224. Its totient is φ = 1305249222.

The previous prime is 1305249221. The next prime is 1305249233. The reversal of 1305249223 is 3229425031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1305249223 - 2¹ = 1305249221 is a prime.

Together with 1305249221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305249221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652624611 + 652624612.

It is an arithmetic number, because the mean of its divisors is an integer number (652624612).

Almost surely, 2^1305249223 is an apocalyptic number.

1305249223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305249223 is an equidigital number, since it uses as much as digits as its factorization.

1305249223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1305249223 is about 36128.2330456390. The cubic root of 1305249223 is about 1092.8598756120.

The spelling of 1305249223 in words is "one billion, three hundred five million, two hundred forty-nine thousand, two hundred twenty-three".