111053391 has 32 divisors (see below), whose sum is σ = 158906880. Its totient is φ = 68874624.

The previous prime is 111053389. The next prime is 111053413. The reversal of 111053391 is 193350111.

It is not a de Polignac number, because 111053391 - 2¹ = 111053389 is a prime.

111053391 is a modest number, since divided by 53391 gives 111 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111053311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252750 + ... + 253188.

It is an arithmetic number, because the mean of its divisors is an integer number (4965840).

Almost surely, 2^111053391 is an apocalyptic number.

111053391 is a deficient number, since it is larger than the sum of its proper divisors (47853489).

111053391 is a wasteful number, since it uses less digits than its factorization.

111053391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 111053391 is about 10538.1872729611. The cubic root of 111053391 is about 480.6665955445. Note that the first 3 decimals are identical.

The spelling of 111053391 in words is "one hundred eleven million, fifty-three thousand, three hundred ninety-one".