113103421 has 4 divisors (see below), whose sum is σ = 113757372. Its totient is φ = 112449472.

The previous prime is 113103391. The next prime is 113103427. The reversal of 113103421 is 124301311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124301311 = 109 ⋅1140379.

It can be written as a sum of positive squares in 2 ways, for example, as 102799321 + 10304100 = 10139^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 113103421 - 2⁷ = 113103293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113103395 and 113103404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113103427) 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, 326716 + ... + 327061.

It is an arithmetic number, because the mean of its divisors is an integer number (28439343).

Almost surely, 2^113103421 is an apocalyptic number.

It is an amenable number.

113103421 is a deficient number, since it is larger than the sum of its proper divisors (653951).

113103421 is an equidigital number, since it uses as much as digits as its factorization.

113103421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653950.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 113103421 is about 10635.0092148526. The cubic root of 113103421 is about 483.6062597550.

Adding to 113103421 its reverse (124301311), we get a palindrome (237404732).

The spelling of 113103421 in words is "one hundred thirteen million, one hundred three thousand, four hundred twenty-one".