31000112111 has 8 divisors (see below), whose sum is σ = 31549810560. Its totient is φ = 30451222872.

The previous prime is 31000112081. The next prime is 31000112159. The reversal of 31000112111 is 11121100013.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31000112111 - 2⁶ = 31000112047 is a prime.

It is a super-2 number, since 2×31000112111² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31000112092 and 31000112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000172111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124745 + ... + 278498.

It is an arithmetic number, because the mean of its divisors is an integer number (3943726320).

Almost surely, 2^31000112111 is an apocalyptic number.

31000112111 is a deficient number, since it is larger than the sum of its proper divisors (549698449).

31000112111 is a wasteful number, since it uses less digits than its factorization.

31000112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404605.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 31000112111 its reverse (11121100013), we get a palindrome (42121212124).

The spelling of 31000112111 in words is "thirty-one billion, one hundred twelve thousand, one hundred eleven".