111933961 has 4 divisors (see below), whose sum is σ = 112128532. Its totient is φ = 111739392.

The previous prime is 111933949. The next prime is 111933979. The reversal of 111933961 is 169339111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169339111 = 61 ⋅2776051.

It can be written as a sum of positive squares in 2 ways, for example, as 102819600 + 9114361 = 10140^2 + 3019^2 .

It is a cyclic number.

It is not a de Polignac number, because 111933961 - 2¹³ = 111925769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111930961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96420 + ... + 97573.

It is an arithmetic number, because the mean of its divisors is an integer number (28032133).

Almost surely, 2^111933961 is an apocalyptic number.

It is an amenable number.

111933961 is a deficient number, since it is larger than the sum of its proper divisors (194571).

111933961 is an equidigital number, since it uses as much as digits as its factorization.

111933961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194570.

The product of its digits is 4374, while the sum is 34.

The square root of 111933961 is about 10579.8847347218. The cubic root of 111933961 is about 481.9336940982.

The spelling of 111933961 in words is "one hundred eleven million, nine hundred thirty-three thousand, nine hundred sixty-one".