113135172 has 12 divisors (see below), whose sum is σ = 263982096. Its totient is φ = 37711720.

The previous prime is 113135171. The next prime is 113135179. The reversal of 113135172 is 271531311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (113135171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4713954 + ... + 4713977.

It is an arithmetic number, because the mean of its divisors is an integer number (21998508).

Almost surely, 2^113135172 is an apocalyptic number.

113135172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113135172 is an abundant number, since it is smaller than the sum of its proper divisors (150846924).

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

113135172 is a wasteful number, since it uses less digits than its factorization.

113135172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9427938 (or 9427936 counting only the distinct ones).

The product of its digits is 630, while the sum is 24.

The square root of 113135172 is about 10636.5018685656. The cubic root of 113135172 is about 483.6515090368.

Adding to 113135172 its reverse (271531311), we get a palindrome (384666483).

The spelling of 113135172 in words is "one hundred thirteen million, one hundred thirty-five thousand, one hundred seventy-two".