2431221243 has 8 divisors (see below), whose sum is σ = 3536321856. Its totient is φ = 1473467400.

The previous prime is 2431221211. The next prime is 2431221259. The reversal of 2431221243 is 3421221342.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2431221243 - 2⁵ = 2431221211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2431221643) 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, 36836653 + ... + 36836718.

It is an arithmetic number, because the mean of its divisors is an integer number (442040232).

Almost surely, 2^2431221243 is an apocalyptic number.

2431221243 is a deficient number, since it is larger than the sum of its proper divisors (1105100613).

2431221243 is a wasteful number, since it uses less digits than its factorization.

2431221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73673385.

The product of its digits is 2304, while the sum is 24.

The square root of 2431221243 is about 49307.4156998722. The cubic root of 2431221243 is about 1344.6466078189.

Adding to 2431221243 its reverse (3421221342), we get a palindrome (5852442585).

Subtracting 2431221243 from its reverse (3421221342), we obtain a palindrome (990000099).

The spelling of 2431221243 in words is "two billion, four hundred thirty-one million, two hundred twenty-one thousand, two hundred forty-three".