68305031 has 8 divisors (see below), whose sum is σ = 72434160. Its totient is φ = 64188288.

The previous prime is 68305021. The next prime is 68305033. The reversal of 68305031 is 13050386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68305031 - 2⁶ = 68304967 is a prime.

It is a super-3 number, since 3×68305031³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68305033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9845 + ... + 15281.

It is an arithmetic number, because the mean of its divisors is an integer number (9054270).

Almost surely, 2^68305031 is an apocalyptic number.

68305031 is a deficient number, since it is larger than the sum of its proper divisors (4129129).

68305031 is a wasteful number, since it uses less digits than its factorization.

68305031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 68305031 is about 8264.6857774509. The cubic root of 68305031 is about 408.7749093730.

The spelling of 68305031 in words is "sixty-eight million, three hundred five thousand, thirty-one".