31110000001 has 4 divisors (see below), whose sum is σ = 31132080900. Its totient is φ = 31087919104.

The previous prime is 31109999989. The next prime is 31110000011. The reversal of 31110000001 is 10000001113.

It is a happy number.

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 591656976 + 30518343025 = 24324^2 + 174695^2 .

It is a cyclic number.

It is not a de Polignac number, because 31110000001 - 2¹¹ = 31109997953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31110000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11038336 + ... + 11041153.

It is an arithmetic number, because the mean of its divisors is an integer number (7783020225).

Almost surely, 2^31110000001 is an apocalyptic number.

It is an amenable number.

31110000001 is a deficient number, since it is larger than the sum of its proper divisors (22080899).

31110000001 is a wasteful number, since it uses less digits than its factorization.

31110000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22080898.

The product of its (nonzero) digits is 3, while the sum is 7.

Adding to 31110000001 its reverse (10000001113), we get a palindrome (41110001114).

The spelling of 31110000001 in words is "thirty-one billion, one hundred ten million, one", and thus it is an aban number.