111347013969 has 9 divisors (see below), whose sum is σ = 160836021723. Its totient is φ = 74230675272.

The previous prime is 111347013919. The next prime is 111347013997. The reversal of 111347013969 is 969310743111.

The square root of 111347013969 is 333687.

It is a perfect power (a square), and thus also a powerful number.

111347013969 is a `hidden beast` number, since 1 + 113 + 470 + 1 + 3 + 9 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59006725569 + 52340288400 = 242913^2 + 228780^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 111347013969 - 2¹¹ = 111347011921 is a prime.

It is a super-2 number, since 2×111347013969² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111347013919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 945447 + ... + 1056675.

Almost surely, 2^111347013969 is an apocalyptic number.

111347013969 is the 333687-th square number.

111347013969 is the 166844-th centered octagonal number.

It is an amenable number.

111347013969 is a deficient number, since it is larger than the sum of its proper divisors (49489007754).

111347013969 is an frugal number, since it uses more digits than its factorization.

111347013969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222464 (or 111232 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The spelling of 111347013969 in words is "one hundred eleven billion, three hundred forty-seven million, thirteen thousand, nine hundred sixty-nine".