71310487 has 2 divisors, whose sum is σ = 71310488. Its totient is φ = 71310486.

The previous prime is 71310467. The next prime is 71310497. The reversal of 71310487 is 78401317.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71310487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71310457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35655243 + 35655244.

It is an arithmetic number, because the mean of its divisors is an integer number (35655244).

Almost surely, 2^71310487 is an apocalyptic number.

71310487 is a deficient number, since it is larger than the sum of its proper divisors (1).

71310487 is an equidigital number, since it uses as much as digits as its factorization.

71310487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 71310487 is about 8444.5536886208. The cubic root of 71310487 is about 414.6844981901.

The spelling of 71310487 in words is "seventy-one million, three hundred ten thousand, four hundred eighty-seven".