71301389 has 2 divisors, whose sum is σ = 71301390. Its totient is φ = 71301388.

The previous prime is 71301359. The next prime is 71301407. The reversal of 71301389 is 98310317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54834025 + 16467364 = 7405^2 + 4058^2 .

It is a cyclic number.

It is not a de Polignac number, because 71301389 - 2⁸ = 71301133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71301359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35650694 + 35650695.

It is an arithmetic number, because the mean of its divisors is an integer number (35650695).

Almost surely, 2^71301389 is an apocalyptic number.

It is an amenable number.

71301389 is a deficient number, since it is larger than the sum of its proper divisors (1).

71301389 is an equidigital number, since it uses as much as digits as its factorization.

71301389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 71301389 is about 8444.0149810383. The cubic root of 71301389 is about 414.6668618873. Note that the first 3 decimals are identical.

The spelling of 71301389 in words is "seventy-one million, three hundred one thousand, three hundred eighty-nine".