31241121111 has 6 divisors (see below), whose sum is σ = 45126063840. Its totient is φ = 20827414068.

The previous prime is 31241121077. The next prime is 31241121167. The reversal of 31241121111 is 11112114213.

31241121111 is a `hidden beast` number, since 31 + 2 + 411 + 211 + 11 = 666.

It is not a de Polignac number, because 31241121111 - 2⁶ = 31241121047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31241121911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1735617831 + ... + 1735617848.

It is an arithmetic number, because the mean of its divisors is an integer number (7521010640).

Almost surely, 2^31241121111 is an apocalyptic number.

31241121111 is a deficient number, since it is larger than the sum of its proper divisors (13884942729).

31241121111 is a wasteful number, since it uses less digits than its factorization.

31241121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471235685 (or 3471235682 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 31241121111 its reverse (11112114213), we get a palindrome (42353235324).

It can be divided in two parts, 31 and 241121111, that added together give a palindrome (241121142).

The spelling of 31241121111 in words is "thirty-one billion, two hundred forty-one million, one hundred twenty-one thousand, one hundred eleven".