113031020020 has 24 divisors (see below), whose sum is σ = 245550148200. Its totient is φ = 43653359232.

The previous prime is 113031019967. The next prime is 113031020057. The reversal of 113031020020 is 20020130311.

It can be written as a sum of positive squares in 4 ways, for example, as 37758707856 + 75272312164 = 194316^2 + 274358^2 .

It is a super-2 number, since 2×113031020020² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97439955 + ... + 97441114.

It is an arithmetic number, because the mean of its divisors is an integer number (10231256175).

Almost surely, 2^113031020020 is an apocalyptic number.

113031020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113031020020 is an abundant number, since it is smaller than the sum of its proper divisors (132519128180).

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

113031020020 is a wasteful number, since it uses less digits than its factorization.

113031020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194881107 (or 194881105 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 113031020020 its reverse (20020130311), we get a palindrome (133051150331).

The spelling of 113031020020 in words is "one hundred thirteen billion, thirty-one million, twenty thousand, twenty".