68630131 has 2 divisors, whose sum is σ = 68630132. Its totient is φ = 68630130.

The previous prime is 68630129. The next prime is 68630141. The reversal of 68630131 is 13103686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68630131 - 2¹ = 68630129 is a prime.

It is a super-2 number, since 2×68630131² = 9420189762154322, which contains 22 as substring.

Together with 68630129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 68630131.

It is not a weakly prime, because it can be changed into another prime (68630141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34315065 + 34315066.

It is an arithmetic number, because the mean of its divisors is an integer number (34315066).

Almost surely, 2^68630131 is an apocalyptic number.

68630131 is a deficient number, since it is larger than the sum of its proper divisors (1).

68630131 is an equidigital number, since it uses as much as digits as its factorization.

68630131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 68630131 is about 8284.3304497105. The cubic root of 68630131 is about 409.4224089841.

The spelling of 68630131 in words is "sixty-eight million, six hundred thirty thousand, one hundred thirty-one".