2231331516 has 48 divisors (see below), whose sum is σ = 5971553280. Its totient is φ = 719783280.

The previous prime is 2231331511. The next prime is 2231331551. The reversal of 2231331516 is 6151331322.

2231331516 is a `hidden beast` number, since 22 + 313 + 315 + 16 = 666.

It is a super-3 number, since 3×2231331516³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2231331516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231331511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329886 + ... + 336581.

It is an arithmetic number, because the mean of its divisors is an integer number (124407360).

It is a self-describing number.

Almost surely, 2^2231331516 is an apocalyptic number.

It is an amenable number.

2231331516 is an abundant number, since it is smaller than the sum of its proper divisors (3740221764).

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

2231331516 is a wasteful number, since it uses less digits than its factorization.

2231331516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666511 (or 666503 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 2231331516 is about 47236.9719181914. The cubic root of 2231331516 is about 1306.7365334998.

Adding to 2231331516 its reverse (6151331322), we get a palindrome (8382662838).

The spelling of 2231331516 in words is "two billion, two hundred thirty-one million, three hundred thirty-one thousand, five hundred sixteen".