71238707 has 2 divisors, whose sum is σ = 71238708. Its totient is φ = 71238706.

The previous prime is 71238701. The next prime is 71238709. The reversal of 71238707 is 70783217.

It is a strong prime.

It is an emirp because it is prime and its reverse (70783217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71238707 - 2⁸ = 71238451 is a prime.

Together with 71238709, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71238701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35619353 + 35619354.

It is an arithmetic number, because the mean of its divisors is an integer number (35619354).

Almost surely, 2^71238707 is an apocalyptic number.

71238707 is a deficient number, since it is larger than the sum of its proper divisors (1).

71238707 is an equidigital number, since it uses as much as digits as its factorization.

71238707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 71238707 is about 8440.3025419709. The cubic root of 71238707 is about 414.5453132097.

The spelling of 71238707 in words is "seventy-one million, two hundred thirty-eight thousand, seven hundred seven".