68510131 has 2 divisors, whose sum is σ = 68510132. Its totient is φ = 68510130.

The previous prime is 68510111. The next prime is 68510147. The reversal of 68510131 is 13101586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68510131 - 2⁷ = 68510003 is a prime.

It is a super-2 number, since 2×68510131² = 9387276099274322, which contains 22 as substring.

It is equal to p_4035607 and since 68510131 and 4035607 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 68510096 and 68510105.

It is not a weakly prime, because it can be changed into another prime (68510111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34255065 + 34255066.

It is an arithmetic number, because the mean of its divisors is an integer number (34255066).

Almost surely, 2^68510131 is an apocalyptic number.

68510131 is a deficient number, since it is larger than the sum of its proper divisors (1).

68510131 is an equidigital number, since it uses as much as digits as its factorization.

68510131 is an evil number, because the sum of its binary digits is even.

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

The square root of 68510131 is about 8277.0846920882. The cubic root of 68510131 is about 409.1836443130.

It can be divided in two parts, 685 and 10131, that added together give a square (10816 = 104²).

The spelling of 68510131 in words is "sixty-eight million, five hundred ten thousand, one hundred thirty-one".