31224234421111 has 4 divisors (see below), whose sum is σ = 32300932159800. Its totient is φ = 30147536682424.

The previous prime is 31224234421109. The next prime is 31224234421129. The reversal of 31224234421111 is 11112443242213.

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

It is a cyclic number.

It is not a de Polignac number, because 31224234421111 - 2¹ = 31224234421109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31224234421151) 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, 538348869301 + ... + 538348869358.

It is an arithmetic number, because the mean of its divisors is an integer number (8075233039950).

Almost surely, 2^{31224234421111} is an apocalyptic number.

31224234421111 is a deficient number, since it is larger than the sum of its proper divisors (1076697738689).

31224234421111 is a wasteful number, since it uses less digits than its factorization.

31224234421111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076697738688.

The product of its digits is 9216, while the sum is 31.

Adding to 31224234421111 its reverse (11112443242213), we get a palindrome (42336677663324).

The spelling of 31224234421111 in words is "thirty-one trillion, two hundred twenty-four billion, two hundred thirty-four million, four hundred twenty-one thousand, one hundred eleven".