247333243 has 2 divisors, whose sum is σ = 247333244. Its totient is φ = 247333242.

The previous prime is 247333231. The next prime is 247333249. The reversal of 247333243 is 342333742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247333243 - 2¹³ = 247325051 is a prime.

It is a super-2 number, since 2×247333243² = 122347466185794098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247333249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123666621 + 123666622.

It is an arithmetic number, because the mean of its divisors is an integer number (123666622).

Almost surely, 2^247333243 is an apocalyptic number.

247333243 is a deficient number, since it is larger than the sum of its proper divisors (1).

247333243 is an equidigital number, since it uses as much as digits as its factorization.

247333243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 31.

The square root of 247333243 is about 15726.8319441647. The cubic root of 247333243 is about 627.7125774061.

Adding to 247333243 its reverse (342333742), we get a palindrome (589666985).

The spelling of 247333243 in words is "two hundred forty-seven million, three hundred thirty-three thousand, two hundred forty-three".