247113143 has 2 divisors, whose sum is σ = 247113144. Its totient is φ = 247113142.

The previous prime is 247113079. The next prime is 247113149. The reversal of 247113143 is 341311742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247113143 - 2⁶ = 247113079 is a prime.

It is a super-3 number, since 3×247113143³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247113149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123556571 + 123556572.

It is an arithmetic number, because the mean of its divisors is an integer number (123556572).

Almost surely, 2^247113143 is an apocalyptic number.

247113143 is a deficient number, since it is larger than the sum of its proper divisors (1).

247113143 is an equidigital number, since it uses as much as digits as its factorization.

247113143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 247113143 is about 15719.8327917316. The cubic root of 247113143 is about 627.5263232398.

Adding to 247113143 its reverse (341311742), we get a palindrome (588424885).

The spelling of 247113143 in words is "two hundred forty-seven million, one hundred thirteen thousand, one hundred forty-three".