111131012 has 6 divisors (see below), whose sum is σ = 194479278. Its totient is φ = 55565504.

The previous prime is 111130997. The next prime is 111131029. The reversal of 111131012 is 210131111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 89378116 + 21752896 = 9454^2 + 4664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111130984 and 111131002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13891373 + ... + 13891380.

It is an arithmetic number, because the mean of its divisors is an integer number (32413213).

Almost surely, 2^111131012 is an apocalyptic number.

It is an amenable number.

111131012 is a deficient number, since it is larger than the sum of its proper divisors (83348266).

111131012 is a wasteful number, since it uses less digits than its factorization.

111131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27782757 (or 27782755 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 111131012 is about 10541.8694736750. The cubic root of 111131012 is about 480.7785571042.

Adding to 111131012 its reverse (210131111), we get a palindrome (321262123).

Subtracting 111131012 from its reverse (210131111), we obtain a palindrome (99000099).

It can be divided in two parts, 1111 and 31012, that added together give a palindrome (32123).

The spelling of 111131012 in words is "one hundred eleven million, one hundred thirty-one thousand, twelve".