111397493 has 2 divisors, whose sum is σ = 111397494. Its totient is φ = 111397492.

The previous prime is 111397471. The next prime is 111397501. The reversal of 111397493 is 394793111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111365809 + 31684 = 10553^2 + 178^2 .

It is an emirp because it is prime and its reverse (394793111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111397493 - 2²² = 107203189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111397453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55698746 + 55698747.

It is an arithmetic number, because the mean of its divisors is an integer number (55698747).

Almost surely, 2^111397493 is an apocalyptic number.

It is an amenable number.

111397493 is a deficient number, since it is larger than the sum of its proper divisors (1).

111397493 is an equidigital number, since it uses as much as digits as its factorization.

111397493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 111397493 is about 10554.5010777393. The cubic root of 111397493 is about 481.1625365761.

The spelling of 111397493 in words is "one hundred eleven million, three hundred ninety-seven thousand, four hundred ninety-three".