68814131 has 4 divisors (see below), whose sum is σ = 68871264. Its totient is φ = 68757000.

The previous prime is 68814127. The next prime is 68814133. The reversal of 68814131 is 13141886.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13141886 = 2 ⋅6570943.

It is a cyclic number.

It is not a de Polignac number, because 68814131 - 2² = 68814127 is a prime.

It is a super-2 number, since 2×68814131² = 9470769250570322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68814133) 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, 26720 + ... + 29181.

It is an arithmetic number, because the mean of its divisors is an integer number (17217816).

Almost surely, 2^68814131 is an apocalyptic number.

68814131 is a deficient number, since it is larger than the sum of its proper divisors (57133).

68814131 is a wasteful number, since it uses less digits than its factorization.

68814131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57132.

The product of its digits is 4608, while the sum is 32.

The square root of 68814131 is about 8295.4283192612. The cubic root of 68814131 is about 409.7879748469.

The spelling of 68814131 in words is "sixty-eight million, eight hundred fourteen thousand, one hundred thirty-one".