113204203581 has 24 divisors (see below), whose sum is σ = 175595221440. Its totient is φ = 64683256512.

The previous prime is 113204203579. The next prime is 113204203597. The reversal of 113204203581 is 185302402311.

It is not a de Polignac number, because 113204203581 - 2¹ = 113204203579 is a prime.

It is a super-2 number, since 2×113204203581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113204203181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3033025 + ... + 3070121.

It is an arithmetic number, because the mean of its divisors is an integer number (7316467560).

Almost surely, 2^113204203581 is an apocalyptic number.

It is an amenable number.

113204203581 is a deficient number, since it is larger than the sum of its proper divisors (62391017859).

113204203581 is a wasteful number, since it uses less digits than its factorization.

113204203581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57873 (or 57866 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 113204203581 its reverse (185302402311), we get a palindrome (298506605892).

The spelling of 113204203581 in words is "one hundred thirteen billion, two hundred four million, two hundred three thousand, five hundred eighty-one".