113401220 has 24 divisors (see below), whose sum is σ = 252151704. Its totient is φ = 42692096.

The previous prime is 113401217. The next prime is 113401229. The reversal of 113401220 is 22104311.

It can be written as a sum of positive squares in 4 ways, for example, as 39337984 + 74063236 = 6272^2 + 8606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 113401195 and 113401204.

It is not an unprimeable number, because it can be changed into a prime (113401229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166427 + ... + 167106.

It is an arithmetic number, because the mean of its divisors is an integer number (10506321).

Almost surely, 2^113401220 is an apocalyptic number.

113401220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113401220 is an abundant number, since it is smaller than the sum of its proper divisors (138750484).

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

113401220 is a wasteful number, since it uses less digits than its factorization.

113401220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333559 (or 333557 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 113401220 is about 10649.0008921025. Note that the first 3 decimals coincide. The cubic root of 113401220 is about 484.0303295886.

Adding to 113401220 its reverse (22104311), we get a palindrome (135505531).

The spelling of 113401220 in words is "one hundred thirteen million, four hundred one thousand, two hundred twenty".