111428633 has 2 divisors, whose sum is σ = 111428634. Its totient is φ = 111428632.

The previous prime is 111428627. The next prime is 111428641. The reversal of 111428633 is 336824111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85895824 + 25532809 = 9268^2 + 5053^2 .

It is a cyclic number.

It is not a de Polignac number, because 111428633 - 2⁴ = 111428617 is a prime.

It is equal to p_6380309 and since 111428633 and 6380309 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 111428596 and 111428605.

It is not a weakly prime, because it can be changed into another prime (111428683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55714316 + 55714317.

It is an arithmetic number, because the mean of its divisors is an integer number (55714317).

Almost surely, 2^111428633 is an apocalyptic number.

It is an amenable number.

111428633 is a deficient number, since it is larger than the sum of its proper divisors (1).

111428633 is an equidigital number, since it uses as much as digits as its factorization.

111428633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 111428633 is about 10555.9761746605. The cubic root of 111428633 is about 481.2073670447.

The spelling of 111428633 in words is "one hundred eleven million, four hundred twenty-eight thousand, six hundred thirty-three".