31224143441 has 4 divisors (see below), whose sum is σ = 31300486500. Its totient is φ = 31147800384.

The previous prime is 31224143437. The next prime is 31224143443. The reversal of 31224143441 is 14434142213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29316288400 + 1907855041 = 171220^2 + 43679^2 .

It is a cyclic number.

It is not a de Polignac number, because 31224143441 - 2² = 31224143437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31224143443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38170916 + ... + 38171733.

It is an arithmetic number, because the mean of its divisors is an integer number (7825121625).

Almost surely, 2^31224143441 is an apocalyptic number.

It is an amenable number.

31224143441 is a deficient number, since it is larger than the sum of its proper divisors (76343059).

31224143441 is an equidigital number, since it uses as much as digits as its factorization.

31224143441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76343058.

The product of its digits is 9216, while the sum is 29.

Adding to 31224143441 its reverse (14434142213), we get a palindrome (45658285654).

The spelling of 31224143441 in words is "thirty-one billion, two hundred twenty-four million, one hundred forty-three thousand, four hundred forty-one".