247130641 has 2 divisors, whose sum is σ = 247130642. Its totient is φ = 247130640.

The previous prime is 247130629. The next prime is 247130647. The reversal of 247130641 is 146031742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245831041 + 1299600 = 15679^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 247130641 - 2⁹ = 247130129 is a prime.

It is a super-2 number, since 2×247130641² = 122147107442141762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (247130647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123565320 + 123565321.

It is an arithmetic number, because the mean of its divisors is an integer number (123565321).

Almost surely, 2^247130641 is an apocalyptic number.

It is an amenable number.

247130641 is a deficient number, since it is larger than the sum of its proper divisors (1).

247130641 is an equidigital number, since it uses as much as digits as its factorization.

247130641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 247130641 is about 15720.3893399623. The cubic root of 247130641 is about 627.5411345341.

The spelling of 247130641 in words is "two hundred forty-seven million, one hundred thirty thousand, six hundred forty-one".