111162131 has 2 divisors, whose sum is σ = 111162132. Its totient is φ = 111162130.

The previous prime is 111162119. The next prime is 111162143. The reversal of 111162131 is 131261111.

It is a balanced prime because it is at equal distance from previous prime (111162119) and next prime (111162143).

It is an emirp because it is prime and its reverse (131261111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111162131 - 2⁶ = 111162067 is a prime.

It is a super-2 number, since 2×111162131² = 24714038736922322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111162101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55581065 + 55581066.

It is an arithmetic number, because the mean of its divisors is an integer number (55581066).

Almost surely, 2^111162131 is an apocalyptic number.

111162131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111162131 is an equidigital number, since it uses as much as digits as its factorization.

111162131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 17.

The square root of 111162131 is about 10543.3453419681. The cubic root of 111162131 is about 480.8234289222.

The spelling of 111162131 in words is "one hundred eleven million, one hundred sixty-two thousand, one hundred thirty-one".