111357919 has 2 divisors, whose sum is σ = 111357920. Its totient is φ = 111357918.

The previous prime is 111357889. The next prime is 111357931. The reversal of 111357919 is 919753111.

It is a strong prime.

It is an emirp because it is prime and its reverse (919753111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111357919 - 2⁵ = 111357887 is a prime.

It is a super-4 number, since 4×111357919⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111357959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55678959 + 55678960.

It is an arithmetic number, because the mean of its divisors is an integer number (55678960).

Almost surely, 2^111357919 is an apocalyptic number.

111357919 is a deficient number, since it is larger than the sum of its proper divisors (1).

111357919 is an equidigital number, since it uses as much as digits as its factorization.

111357919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8505, while the sum is 37.

The square root of 111357919 is about 10552.6261660309. The cubic root of 111357919 is about 481.1055521054.

The spelling of 111357919 in words is "one hundred eleven million, three hundred fifty-seven thousand, nine hundred nineteen".