113203321020 has 36 divisors (see below), whose sum is σ = 343383407640. Its totient is φ = 30187552224.

The previous prime is 113203321019. The next prime is 113203321031. The reversal of 113203321020 is 20123302311.

113203321020 is a `hidden beast` number, since 1 + 1 + 320 + 3 + 321 + 0 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 113203320984 and 113203321002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314453490 + ... + 314453849.

It is an arithmetic number, because the mean of its divisors is an integer number (9538427990).

Almost surely, 2^113203321020 is an apocalyptic number.

113203321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113203321020 is an abundant number, since it is smaller than the sum of its proper divisors (230180086620).

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

113203321020 is a wasteful number, since it uses less digits than its factorization.

113203321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628907354 (or 628907349 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 113203321020 its reverse (20123302311), we get a palindrome (133326623331).

The spelling of 113203321020 in words is "one hundred thirteen billion, two hundred three million, three hundred twenty-one thousand, twenty".