31705068 has 48 divisors (see below), whose sum is σ = 79440480. Its totient is φ = 9805824.

The previous prime is 31705049. The next prime is 31705081. The reversal of 31705068 is 86050713.

It is a super-2 number, since 2×31705068² = 2010422673769248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13828 + ... + 15956.

It is an arithmetic number, because the mean of its divisors is an integer number (1655010).

Almost surely, 2^31705068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31705068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39720240).

31705068 is an abundant number, since it is smaller than the sum of its proper divisors (47735412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31705068 is a wasteful number, since it uses less digits than its factorization.

31705068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 31705068 is about 5630.7253529186. The cubic root of 31705068 is about 316.5018330819.

It can be divided in two parts, 3 and 1705068, that added together give a palindrome (1705071).

The spelling of 31705068 in words is "thirty-one million, seven hundred five thousand, sixty-eight".