111213230031 has 6 divisors (see below), whose sum is σ = 160641332280. Its totient is φ = 74142153348.

The previous prime is 111213230027. The next prime is 111213230047. The reversal of 111213230031 is 130032312111.

It is not a de Polignac number, because 111213230031 - 2² = 111213230027 is a prime.

It is a super-2 number, since 2×111213230031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111213229986 and 111213230013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213230131) 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 5 ways as a sum of consecutive naturals, for example, 6178512771 + ... + 6178512788.

It is an arithmetic number, because the mean of its divisors is an integer number (26773555380).

Almost surely, 2^111213230031 is an apocalyptic number.

111213230031 is a deficient number, since it is larger than the sum of its proper divisors (49428102249).

111213230031 is a wasteful number, since it uses less digits than its factorization.

111213230031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12357025565 (or 12357025562 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 111213230031 its reverse (130032312111), we get a palindrome (241245542142).

The spelling of 111213230031 in words is "one hundred eleven billion, two hundred thirteen million, two hundred thirty thousand, thirty-one".