113144421 has 16 divisors (see below), whose sum is σ = 162783936. Its totient is φ = 69490176.

The previous prime is 113144419. The next prime is 113144431. The reversal of 113144421 is 124441311.

It is not a de Polignac number, because 113144421 - 2¹ = 113144419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113144431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19381 + ... + 24533.

It is an arithmetic number, because the mean of its divisors is an integer number (10173996).

Almost surely, 2^113144421 is an apocalyptic number.

It is an amenable number.

113144421 is a deficient number, since it is larger than the sum of its proper divisors (49639515).

113144421 is a wasteful number, since it uses less digits than its factorization.

113144421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732.

The product of its digits is 384, while the sum is 21.

The square root of 113144421 is about 10636.9366360809. The cubic root of 113144421 is about 483.6646884659.

Adding to 113144421 its reverse (124441311), we get a palindrome (237585732).

The spelling of 113144421 in words is "one hundred thirteen million, one hundred forty-four thousand, four hundred twenty-one".