31244141111 has 4 divisors (see below), whose sum is σ = 31254193800. Its totient is φ = 31234088424.

The previous prime is 31244141107. The next prime is 31244141129. The reversal of 31244141111 is 11114144213.

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 31244141111 - 2² = 31244141107 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 (31244141171) 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, 5021681 + ... + 5027898.

It is an arithmetic number, because the mean of its divisors is an integer number (7813548450).

Almost surely, 2^31244141111 is an apocalyptic number.

31244141111 is a deficient number, since it is larger than the sum of its proper divisors (10052689).

31244141111 is a wasteful number, since it uses less digits than its factorization.

31244141111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10052688.

The product of its digits is 384, while the sum is 23.

Adding to 31244141111 its reverse (11114144213), we get a palindrome (42358285324).

The spelling of 31244141111 in words is "thirty-one billion, two hundred forty-four million, one hundred forty-one thousand, one hundred eleven".