111818351 has 2 divisors, whose sum is σ = 111818352. Its totient is φ = 111818350.

The previous prime is 111818327. The next prime is 111818381. The reversal of 111818351 is 153818111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111818351 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111818381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55909175 + 55909176.

It is an arithmetic number, because the mean of its divisors is an integer number (55909176).

Almost surely, 2^111818351 is an apocalyptic number.

111818351 is a deficient number, since it is larger than the sum of its proper divisors (1).

111818351 is an equidigital number, since it uses as much as digits as its factorization.

111818351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 29.

The square root of 111818351 is about 10574.4196531063. The cubic root of 111818351 is about 481.7677166268.

The spelling of 111818351 in words is "one hundred eleven million, eight hundred eighteen thousand, three hundred fifty-one".