111131413 has 4 divisors (see below), whose sum is σ = 111227488. Its totient is φ = 111035340.

The previous prime is 111131369. The next prime is 111131429. The reversal of 111131413 is 314131111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111131413 - 2¹⁷ = 111000341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111131213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46281 + ... + 48622.

It is an arithmetic number, because the mean of its divisors is an integer number (27806872).

Almost surely, 2^111131413 is an apocalyptic number.

It is an amenable number.

111131413 is a deficient number, since it is larger than the sum of its proper divisors (96075).

111131413 is an equidigital number, since it uses as much as digits as its factorization.

111131413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96074.

The product of its digits is 36, while the sum is 16.

The square root of 111131413 is about 10541.8884930547. Note that the first 3 decimals coincide. The cubic root of 111131413 is about 480.7791353765.

Adding to 111131413 its reverse (314131111), we get a palindrome (425262524).

It can be divided in two parts, 1111 and 31413, that multiplied together give a palindrome (34899843).

The spelling of 111131413 in words is "one hundred eleven million, one hundred thirty-one thousand, four hundred thirteen".