113621623 has 12 divisors (see below), whose sum is σ = 118525680. Its totient is φ = 108911936.

The previous prime is 113621617. The next prime is 113621647. The reversal of 113621623 is 326126311.

It is not a de Polignac number, because 113621623 - 2²⁵ = 80067191 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 (113621663) 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 11 ways as a sum of consecutive naturals, for example, 140043 + ... + 140851.

It is an arithmetic number, because the mean of its divisors is an integer number (9877140).

Almost surely, 2^113621623 is an apocalyptic number.

113621623 is a deficient number, since it is larger than the sum of its proper divisors (4904057).

113621623 is an equidigital number, since it uses as much as digits as its factorization.

113621623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034 (or 1005 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 113621623 is about 10659.3443982264. The cubic root of 113621623 is about 484.3437086300.

Adding to 113621623 its reverse (326126311), we get a palindrome (439747934).

It can be divided in two parts, 113621 and 623, that added together give a square (114244 = 338²).

The spelling of 113621623 in words is "one hundred thirteen million, six hundred twenty-one thousand, six hundred twenty-three".