111013212031 has 16 divisors (see below), whose sum is σ = 117854455680. Its totient is φ = 104206919680.

The previous prime is 111013211999. The next prime is 111013212059. The reversal of 111013212031 is 130212310111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111013212031 - 2⁵ = 111013211999 is a prime.

It is a super-2 number, since 2×111013212031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111013211996 and 111013212014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111013312031) 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, 10460730 + ... + 10471336.

It is an arithmetic number, because the mean of its divisors is an integer number (7365903480).

Almost surely, 2^111013212031 is an apocalyptic number.

111013212031 is a deficient number, since it is larger than the sum of its proper divisors (6841243649).

111013212031 is a wasteful number, since it uses less digits than its factorization.

111013212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12194.

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

Adding to 111013212031 its reverse (130212310111), we get a palindrome (241225522142).

The spelling of 111013212031 in words is "one hundred eleven billion, thirteen million, two hundred twelve thousand, thirty-one".