68340531 has 16 divisors (see below), whose sum is σ = 104592384. Its totient is φ = 38881344.

The previous prime is 68340499. The next prime is 68340533. The reversal of 68340531 is 13504386.

It is not a de Polignac number, because 68340531 - 2⁵ = 68340499 is a prime.

It is a super-2 number, since 2×68340531² = 9340856354723922, which contains 22 as substring.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (68340533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2091 + ... + 11876.

It is an arithmetic number, because the mean of its divisors is an integer number (6537024).

Almost surely, 2^68340531 is an apocalyptic number.

68340531 is a deficient number, since it is larger than the sum of its proper divisors (36251853).

68340531 is a wasteful number, since it uses less digits than its factorization.

68340531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14210.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 68340531 is about 8266.8331905271. The cubic root of 68340531 is about 408.8457142893.

It can be divided in two parts, 683 and 40531, that added together give a palindrome (41214).

The spelling of 68340531 in words is "sixty-eight million, three hundred forty thousand, five hundred thirty-one".