31111112001 has 16 divisors (see below), whose sum is σ = 41554980864. Its totient is φ = 20704027344.

The previous prime is 31111111957. The next prime is 31111112017. The reversal of 31111112001 is 10021111113.

It is not a de Polignac number, because 31111112001 - 2⁷ = 31111111873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31111152001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5176140 + ... + 5182146.

It is an arithmetic number, because the mean of its divisors is an integer number (2597186304).

Almost surely, 2^31111112001 is an apocalyptic number.

It is an amenable number.

31111112001 is a deficient number, since it is larger than the sum of its proper divisors (10443868863).

31111112001 is a wasteful number, since it uses less digits than its factorization.

31111112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8780.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 31111112001 its reverse (10021111113), we get a palindrome (41132223114).

The spelling of 31111112001 in words is "thirty-one billion, one hundred eleven million, one hundred twelve thousand, one".