2231517216 has 48 divisors (see below), whose sum is σ = 5861467584. Its totient is φ = 743364864.

The previous prime is 2231517199. The next prime is 2231517227. The reversal of 2231517216 is 6127151322.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×2231517216³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164650 + ... + 177686.

It is an arithmetic number, because the mean of its divisors is an integer number (122113908).

Almost surely, 2^2231517216 is an apocalyptic number.

It is an amenable number.

2231517216 is an abundant number, since it is smaller than the sum of its proper divisors (3629950368).

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

2231517216 is a wasteful number, since it uses less digits than its factorization.

2231517216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14833 (or 14825 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 2231517216 is about 47238.9374986356. The cubic root of 2231517216 is about 1306.7727830428.

Adding to 2231517216 its reverse (6127151322), we get a palindrome (8358668538).

The spelling of 2231517216 in words is "two billion, two hundred thirty-one million, five hundred seventeen thousand, two hundred sixteen".