31343168 has 28 divisors (see below), whose sum is σ = 62781180. Its totient is φ = 15524352.

The previous prime is 31343161. The next prime is 31343183. The reversal of 31343168 is 86134313.

It can be written as a sum of positive squares in 2 ways, for example, as 28217344 + 3125824 = 5312^2 + 1768^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31343168.

It is not an unprimeable number, because it can be changed into a prime (31343161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4730 + ... + 9222.

It is an arithmetic number, because the mean of its divisors is an integer number (2242185).

Almost surely, 2^31343168 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 31343168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31390590).

31343168 is an abundant number, since it is smaller than the sum of its proper divisors (31438012).

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

31343168 is a wasteful number, since it uses less digits than its factorization.

31343168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614 (or 4604 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 31343168 is about 5598.4969411441. The cubic root of 31343168 is about 315.2929767713.

The spelling of 31343168 in words is "thirty-one million, three hundred forty-three thousand, one hundred sixty-eight".