1723072243 has 2 divisors, whose sum is σ = 1723072244. Its totient is φ = 1723072242.

The previous prime is 1723072231. The next prime is 1723072249. The reversal of 1723072243 is 3422703271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1723072243 - 2⁹ = 1723071731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1723072249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861536121 + 861536122.

It is an arithmetic number, because the mean of its divisors is an integer number (861536122).

Almost surely, 2^1723072243 is an apocalyptic number.

1723072243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1723072243 is an equidigital number, since it uses as much as digits as its factorization.

1723072243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 1723072243 is about 41509.9053600463. The cubic root of 1723072243 is about 1198.8582294872.

The spelling of 1723072243 in words is "one billion, seven hundred twenty-three million, seventy-two thousand, two hundred forty-three".