113321620 has 24 divisors (see below), whose sum is σ = 238367304. Its totient is φ = 45254016.

The previous prime is 113321603. The next prime is 113321633. The reversal of 113321620 is 26123311.

It can be written as a sum of positive squares in 4 ways, for example, as 367236 + 112954384 = 606^2 + 10628^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8722 + ... + 17398.

It is an arithmetic number, because the mean of its divisors is an integer number (9931971).

Almost surely, 2^113321620 is an apocalyptic number.

113321620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113321620 is an abundant number, since it is smaller than the sum of its proper divisors (125045684).

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

113321620 is a wasteful number, since it uses less digits than its factorization.

113321620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339 (or 9337 counting only the distinct ones).

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

The square root of 113321620 is about 10645.2627961925. The cubic root of 113321620 is about 483.9170508760.

Adding to 113321620 its reverse (26123311), we get a palindrome (139444931).

The spelling of 113321620 in words is "one hundred thirteen million, three hundred twenty-one thousand, six hundred twenty".