231302016 has 96 divisors (see below), whose sum is σ = 726144120. Its totient is φ = 70087680.

The previous prime is 231301997. The next prime is 231302041. The reversal of 231302016 is 610203132.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 231302016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3546 + ... + 21798.

Almost surely, 2^231302016 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 231302016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363072060).

231302016 is an abundant number, since it is smaller than the sum of its proper divisors (494842104).

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

231302016 is a wasteful number, since it uses less digits than its factorization.

231302016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18284 (or 18269 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 231302016 is about 15208.6165051263. The cubic root of 231302016 is about 613.8465311918.

Adding to 231302016 its reverse (610203132), we get a palindrome (841505148).

The spelling of 231302016 in words is "two hundred thirty-one million, three hundred two thousand, sixteen".