113220231440 has 40 divisors (see below), whose sum is σ = 263709739800. Its totient is φ = 45206767616.

The previous prime is 113220231347. The next prime is 113220231451. The reversal of 113220231440 is 44132022311.

It can be written as a sum of positive squares in 4 ways, for example, as 5318493184 + 107901738256 = 72928^2 + 328484^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 1225865 + ... + 1314984.

It is an arithmetic number, because the mean of its divisors is an integer number (6592743495).

Almost surely, 2^113220231440 is an apocalyptic number.

113220231440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113220231440 is an abundant number, since it is smaller than the sum of its proper divisors (150489508360).

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

113220231440 is a wasteful number, since it uses less digits than its factorization.

113220231440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541419 (or 2541413 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 113220231440 its reverse (44132022311), we get a palindrome (157352253751).

The spelling of 113220231440 in words is "one hundred thirteen billion, two hundred twenty million, two hundred thirty-one thousand, four hundred forty".