231316416 has 84 divisors (see below), whose sum is σ = 702058032. Its totient is φ = 72566784.

The previous prime is 231316411. The next prime is 231316427. The reversal of 231316416 is 614613132.

231316416 is a `hidden beast` number, since 2 + 3 + 13 + 1 + 641 + 6 = 666.

231316416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231316416² = 107014568622170112, which contains 22 as substring.

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 231316416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231316411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2020 + ... + 21603.

Almost surely, 2^231316416 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 231316416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351029016).

231316416 is an abundant number, since it is smaller than the sum of its proper divisors (470741616).

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

231316416 is a wasteful number, since it uses less digits than its factorization.

231316416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23658 (or 23645 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 231316416 is about 15209.0899136010. The cubic root of 231316416 is about 613.8592695253.

Adding to 231316416 its reverse (614613132), we get a palindrome (845929548).

The spelling of 231316416 in words is "two hundred thirty-one million, three hundred sixteen thousand, four hundred sixteen".