2231161224 has 32 divisors (see below), whose sum is σ = 5581033920. Its totient is φ = 743302976.

The previous prime is 2231161217. The next prime is 2231161259. The reversal of 2231161224 is 4221611322.

It is a super-3 number, since 3×2231161224³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2231161194 and 2231161203.

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, 19162 + ... + 69494.

It is an arithmetic number, because the mean of its divisors is an integer number (174407310).

Almost surely, 2^2231161224 is an apocalyptic number.

2231161224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2231161224 is an abundant number, since it is smaller than the sum of its proper divisors (3349872696).

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

2231161224 is a wasteful number, since it uses less digits than its factorization.

2231161224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52189 (or 52185 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 2231161224 is about 47235.1693550473. The cubic root of 2231161224 is about 1306.7032899055.

Adding to 2231161224 its reverse (4221611322), we get a palindrome (6452772546).

The spelling of 2231161224 in words is "two billion, two hundred thirty-one million, one hundred sixty-one thousand, two hundred twenty-four".