68147311 has 4 divisors (see below), whose sum is σ = 68684032. Its totient is φ = 67610592.

The previous prime is 68147251. The next prime is 68147333. The reversal of 68147311 is 11374186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11374186 = 2 ⋅5687093.

It is a cyclic number.

It is not a de Polignac number, because 68147311 - 2¹¹ = 68145263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68147341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268170 + ... + 268423.

It is an arithmetic number, because the mean of its divisors is an integer number (17171008).

Almost surely, 2^68147311 is an apocalyptic number.

68147311 is a deficient number, since it is larger than the sum of its proper divisors (536721).

68147311 is a wasteful number, since it uses less digits than its factorization.

68147311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536720.

The product of its digits is 4032, while the sum is 31.

The square root of 68147311 is about 8255.1384603773. The cubic root of 68147311 is about 408.4600391279.

The spelling of 68147311 in words is "sixty-eight million, one hundred forty-seven thousand, three hundred eleven".