31103012100011 has 4 divisors (see below), whose sum is σ = 31103256366000. Its totient is φ = 31102767834024.

The previous prime is 31103012099989. The next prime is 31103012100023. The reversal of 31103012100011 is 11000121030113.

It is a happy number.

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 31103012100011 - 2³⁰ = 31101938358187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31103012100311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121941896 + ... + 122196693.

It is an arithmetic number, because the mean of its divisors is an integer number (7775814091500).

Almost surely, 2^{31103012100011} is an apocalyptic number.

31103012100011 is a deficient number, since it is larger than the sum of its proper divisors (244265989).

31103012100011 is a wasteful number, since it uses less digits than its factorization.

31103012100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244265988.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 31103012100011 its reverse (11000121030113), we get a palindrome (42103133130124).

The spelling of 31103012100011 in words is "thirty-one trillion, one hundred three billion, twelve million, one hundred thousand, eleven".