It is a nude number because it is divisible by every one of its digits.
It is a self number, because there is not a number n which added to its sum of digits gives 31413816.
It is a congruent number.
It is an unprimeable number.
Almost surely, 231413816 is an apocalyptic number.
31413816 is a gapful number since it is divisible by the number (36) 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 31413816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49049520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31413816 is a wasteful number, since it uses less digits than its factorization.
31413816 is an odious number, because the sum of its binary digits is odd.
The square root of 31413816 is about 5604.8029403361. The cubic root of 31413816 is about 315.5296908055.
The spelling of 31413816 in words is "thirty-one million, four hundred thirteen thousand, eight hundred sixteen".