31868352 has 84 divisors (see below), whose sum is σ = 92944696. Its totient is φ = 10437120.

The previous prime is 31868351. The next prime is 31868371. The reversal of 31868352 is 25386813.

31868352 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31868351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34683 + ... + 35589.

Almost surely, 2^31868352 is an apocalyptic number.

31868352 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31868352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46472348).

31868352 is an abundant number, since it is smaller than the sum of its proper divisors (61076344).

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

31868352 is a wasteful number, since it uses less digits than its factorization.

31868352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 973 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 31868352 is about 5645.2061078405. The cubic root of 31868352 is about 317.0442407911.

The spelling of 31868352 in words is "thirty-one million, eight hundred sixty-eight thousand, three hundred fifty-two".