71313877 has 2 divisors, whose sum is σ = 71313878. Its totient is φ = 71313876.

The previous prime is 71313863. The next prime is 71313881. The reversal of 71313877 is 77831317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62869041 + 8444836 = 7929^2 + 2906^2 .

It is a cyclic number.

It is not a de Polignac number, because 71313877 - 2¹¹ = 71311829 is a prime.

It is a super-2 number, since 2×71313877² = 10171338105542258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71313817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35656938 + 35656939.

It is an arithmetic number, because the mean of its divisors is an integer number (35656939).

Almost surely, 2^71313877 is an apocalyptic number.

It is an amenable number.

71313877 is a deficient number, since it is larger than the sum of its proper divisors (1).

71313877 is an equidigital number, since it uses as much as digits as its factorization.

71313877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24696, while the sum is 37.

The square root of 71313877 is about 8444.7544073229. The cubic root of 71313877 is about 414.6910692581.

The spelling of 71313877 in words is "seventy-one million, three hundred thirteen thousand, eight hundred seventy-seven".