201113112031 has 16 divisors (see below), whose sum is σ = 223814495520. Its totient is φ = 179530243200.

The previous prime is 201113112029. The next prime is 201113112047. The reversal of 201113112031 is 130211311102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201113112031 - 2¹ = 201113112029 is a prime.

It is a super-2 number, since 2×201113112031² (a number of 23 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 = 201113111996 and 201113112014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201113112061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1724596 + ... + 1837513.

It is an arithmetic number, because the mean of its divisors is an integer number (13988405970).

Almost surely, 2^201113112031 is an apocalyptic number.

201113112031 is a deficient number, since it is larger than the sum of its proper divisors (22701383489).

201113112031 is a wasteful number, since it uses less digits than its factorization.

201113112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562266.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 201113112031 its reverse (130211311102), we get a palindrome (331324423133).

The spelling of 201113112031 in words is "two hundred one billion, one hundred thirteen million, one hundred twelve thousand, thirty-one".