113621320 has 32 divisors (see below), whose sum is σ = 255969720. Its totient is φ = 45391360.

The previous prime is 113621303. The next prime is 113621323. The reversal of 113621320 is 23126311.

It can be written as a sum of positive squares in 4 ways, for example, as 51179716 + 62441604 = 7154^2 + 7902^2 .

It is not an unprimeable number, because it can be changed into a prime (113621323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46530 + ... + 48910.

Almost surely, 2^113621320 is an apocalyptic number.

113621320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113621320 is an abundant number, since it is smaller than the sum of its proper divisors (142348400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113621320 is a wasteful number, since it uses less digits than its factorization.

113621320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585 (or 3581 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 113621320 is about 10659.3301853353. The cubic root of 113621320 is about 484.3432780891.

Adding to 113621320 its reverse (23126311), we get a palindrome (136747631).

The spelling of 113621320 in words is "one hundred thirteen million, six hundred twenty-one thousand, three hundred twenty".