111031889 has 2 divisors, whose sum is σ = 111031890. Its totient is φ = 111031888.

The previous prime is 111031831. The next prime is 111031897. The reversal of 111031889 is 988130111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108576400 + 2455489 = 10420^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 111031889 - 2¹⁶ = 110966353 is a prime.

It is not a weakly prime, because it can be changed into another prime (111031489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55515944 + 55515945.

It is an arithmetic number, because the mean of its divisors is an integer number (55515945).

Almost surely, 2^111031889 is an apocalyptic number.

It is an amenable number.

111031889 is a deficient number, since it is larger than the sum of its proper divisors (1).

111031889 is an equidigital number, since it uses as much as digits as its factorization.

111031889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 32.

The square root of 111031889 is about 10537.1670291402. The cubic root of 111031889 is about 480.6355715474.

The spelling of 111031889 in words is "one hundred eleven million, thirty-one thousand, eight hundred eighty-nine".