31268712 has 64 divisors (see below), whose sum is σ = 83436480. Its totient is φ = 9731072.

The previous prime is 31268711. The next prime is 31268719. The reversal of 31268712 is 21786213.

It is a super-3 number, since 3×31268712³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31268712.

It is not an unprimeable number, because it can be changed into a prime (31268711) 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, 70363 + ... + 70805.

It is an arithmetic number, because the mean of its divisors is an integer number (1303695).

Almost surely, 2^31268712 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 31268712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41718240).

31268712 is an abundant number, since it is smaller than the sum of its proper divisors (52167768).

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

31268712 is a wasteful number, since it uses less digits than its factorization.

31268712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 638 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 31268712 is about 5591.8433454452. The cubic root of 31268712 is about 315.0431183102.

The spelling of 31268712 in words is "thirty-one million, two hundred sixty-eight thousand, seven hundred twelve".