68131051 has 4 divisors (see below), whose sum is σ = 68185600. Its totient is φ = 68076504.

The previous prime is 68131043. The next prime is 68131057. The reversal of 68131051 is 15013186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15013186 = 2 ⋅7506593.

It is a cyclic number.

It is not a de Polignac number, because 68131051 - 2³ = 68131043 is a prime.

It is a super-2 number, since 2×68131051² = 9283680220729202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68131057) 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, 25356 + ... + 27913.

It is an arithmetic number, because the mean of its divisors is an integer number (17046400).

Almost surely, 2^68131051 is an apocalyptic number.

68131051 is a deficient number, since it is larger than the sum of its proper divisors (54549).

68131051 is a wasteful number, since it uses less digits than its factorization.

68131051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54548.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 68131051 is about 8254.1535604809. The cubic root of 68131051 is about 408.4275502523.

The spelling of 68131051 in words is "sixty-eight million, one hundred thirty-one thousand, fifty-one".