31068312 has 64 divisors (see below), whose sum is σ = 85449600. Its totient is φ = 9335040.

The previous prime is 31068281. The next prime is 31068313. The reversal of 31068312 is 21386013.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31068313) 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, 35739 + ... + 36597.

It is an arithmetic number, because the mean of its divisors is an integer number (1335150).

Almost surely, 2^31068312 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 31068312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42724800).

31068312 is an abundant number, since it is smaller than the sum of its proper divisors (54381288).

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

31068312 is a wasteful number, since it uses less digits than its factorization.

31068312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 31068312 is about 5573.8955856743. The cubic root of 31068312 is about 314.3686421859.

The spelling of 31068312 in words is "thirty-one million, sixty-eight thousand, three hundred twelve".