71311963337 has 2 divisors, whose sum is σ = 71311963338. Its totient is φ = 71311963336.

The previous prime is 71311963321. The next prime is 71311963367. The reversal of 71311963337 is 73336911317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70851260041 + 460703296 = 266179^2 + 21464^2 .

It is an emirp because it is prime and its reverse (73336911317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71311963337 - 2⁴ = 71311963321 is a prime.

It is a super-2 number, since 2×71311963337² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71311963367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35655981668 + 35655981669.

It is an arithmetic number, because the mean of its divisors is an integer number (35655981669).

Almost surely, 2^71311963337 is an apocalyptic number.

It is an amenable number.

71311963337 is a deficient number, since it is larger than the sum of its proper divisors (1).

71311963337 is an equidigital number, since it uses as much as digits as its factorization.

71311963337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214326, while the sum is 44.

The spelling of 71311963337 in words is "seventy-one billion, three hundred eleven million, nine hundred sixty-three thousand, three hundred thirty-seven".