113213540 has 48 divisors (see below), whose sum is σ = 274627584. Its totient is φ = 38745600.

The previous prime is 113213497. The next prime is 113213549. The reversal of 113213540 is 45312311.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (113213549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11396 + ... + 18875.

It is an arithmetic number, because the mean of its divisors is an integer number (5721408).

Almost surely, 2^113213540 is an apocalyptic number.

113213540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113213540 is an abundant number, since it is smaller than the sum of its proper divisors (161414044).

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

113213540 is a wasteful number, since it uses less digits than its factorization.

113213540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30308 (or 30306 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 113213540 is about 10640.1851487650. The cubic root of 113213540 is about 483.7631573494.

Adding to 113213540 its reverse (45312311), we get a palindrome (158525851).

The spelling of 113213540 in words is "one hundred thirteen million, two hundred thirteen thousand, five hundred forty".