111146131 has 2 divisors, whose sum is σ = 111146132. Its totient is φ = 111146130.

The previous prime is 111146111. The next prime is 111146171. The reversal of 111146131 is 131641111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111146131 - 2¹⁵ = 111113363 is a prime.

It is a super-2 number, since 2×111146131² = 24706924872538322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111146099 and 111146108.

It is not a weakly prime, because it can be changed into another prime (111146111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55573065 + 55573066.

It is an arithmetic number, because the mean of its divisors is an integer number (55573066).

Almost surely, 2^111146131 is an apocalyptic number.

111146131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111146131 is an equidigital number, since it uses as much as digits as its factorization.

111146131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 19.

The square root of 111146131 is about 10542.5865422106. The cubic root of 111146131 is about 480.8003588835.

Adding to 111146131 its reverse (131641111), we get a palindrome (242787242).

The spelling of 111146131 in words is "one hundred eleven million, one hundred forty-six thousand, one hundred thirty-one".