2213542431 has 8 divisors (see below), whose sum is σ = 3279322160. Its totient is φ = 1475694936.

The previous prime is 2213542417. The next prime is 2213542451. The reversal of 2213542431 is 1342453122.

2213542431 is a `hidden beast` number, since 221 + 3 + 5 + 4 + 2 + 431 = 666.

It is not a de Polignac number, because 2213542431 - 2¹⁴ = 2213526047 is a prime.

It is a super-2 number, since 2×2213542431² = 9799540187674779522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 81983053 = 2213542431 / (2 + 2 + 1 + 3 + 5 + 4 + 2 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2213542395 and 2213542404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213542451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40991500 + ... + 40991553.

It is an arithmetic number, because the mean of its divisors is an integer number (409915270).

Almost surely, 2^2213542431 is an apocalyptic number.

2213542431 is a deficient number, since it is larger than the sum of its proper divisors (1065779729).

2213542431 is an equidigital number, since it uses as much as digits as its factorization.

2213542431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81983062 (or 81983056 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 2213542431 is about 47048.2989171766. The cubic root of 2213542431 is about 1303.2546518276.

Adding to 2213542431 its reverse (1342453122), we get a palindrome (3555995553).

It can be divided in two parts, 2213 and 542431, that added together give a square (544644 = 738²).

The spelling of 2213542431 in words is "two billion, two hundred thirteen million, five hundred forty-two thousand, four hundred thirty-one".