11243202421431 has 4 divisors (see below), whose sum is σ = 14990936561912. Its totient is φ = 7495468280952.

The previous prime is 11243202421411. The next prime is 11243202421481. The reversal of 11243202421431 is 13412420234211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-11243202421431 is a prime.

It is a super-2 number, since 2×11243202421431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243202421411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1873867070236 + ... + 1873867070241.

It is an arithmetic number, because the mean of its divisors is an integer number (3747734140478).

Almost surely, 2^{11243202421431} is an apocalyptic number.

11243202421431 is a deficient number, since it is larger than the sum of its proper divisors (3747734140481).

11243202421431 is an equidigital number, since it uses as much as digits as its factorization.

11243202421431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747734140480.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 11243202421431 its reverse (13412420234211), we get a palindrome (24655622655642).

The spelling of 11243202421431 in words is "eleven trillion, two hundred forty-three billion, two hundred two million, four hundred twenty-one thousand, four hundred thirty-one".