68731271 has 12 divisors (see below), whose sum is σ = 80185320. Its totient is φ = 58741200.

The previous prime is 68731261. The next prime is 68731277. The reversal of 68731271 is 17213786.

It is not a de Polignac number, because 68731271 - 2¹⁸ = 68469127 is a prime.

It is a super-2 number, since 2×68731271² = 9447975226550882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68731277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16721 + ... + 20421.

It is an arithmetic number, because the mean of its divisors is an integer number (6682110).

Almost surely, 2^68731271 is an apocalyptic number.

68731271 is a deficient number, since it is larger than the sum of its proper divisors (11454049).

68731271 is a wasteful number, since it uses less digits than its factorization.

68731271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094 (or 4087 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 68731271 is about 8290.4324977651. The cubic root of 68731271 is about 409.6234317567.

The spelling of 68731271 in words is "sixty-eight million, seven hundred thirty-one thousand, two hundred seventy-one".