111432407 has 2 divisors, whose sum is σ = 111432408. Its totient is φ = 111432406.

The previous prime is 111432389. The next prime is 111432437. The reversal of 111432407 is 704234111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111432407 - 2¹² = 111428311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111432437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55716203 + 55716204.

It is an arithmetic number, because the mean of its divisors is an integer number (55716204).

Almost surely, 2^111432407 is an apocalyptic number.

111432407 is a deficient number, since it is larger than the sum of its proper divisors (1).

111432407 is an equidigital number, since it uses as much as digits as its factorization.

111432407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 111432407 is about 10556.1549344446. The cubic root of 111432407 is about 481.2127996882.

Adding to 111432407 its reverse (704234111), we get a palindrome (815666518).

The spelling of 111432407 in words is "one hundred eleven million, four hundred thirty-two thousand, four hundred seven".