113512530 has 32 divisors (see below), whose sum is σ = 272735424. Its totient is φ = 30236096.

The previous prime is 113512523. The next prime is 113512537. The reversal of 113512530 is 35215311.

It is an interprime number because it is at equal distance from previous prime (113512523) and next prime (113512537).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113512497 and 113512506.

It is not an unprimeable number, because it can be changed into a prime (113512537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36829 + ... + 39791.

It is an arithmetic number, because the mean of its divisors is an integer number (8522982).

Almost surely, 2^113512530 is an apocalyptic number.

113512530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

113512530 is an abundant number, since it is smaller than the sum of its proper divisors (159222894).

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

113512530 is a wasteful number, since it uses less digits than its factorization.

113512530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 113512530 is about 10654.2259221400. The cubic root of 113512530 is about 484.1886459266.

Adding to 113512530 its reverse (35215311), we get a palindrome (148727841).

The spelling of 113512530 in words is "one hundred thirteen million, five hundred twelve thousand, five hundred thirty".