113161140 has 36 divisors (see below), whose sum is σ = 343256004. Its totient is φ = 30176256.

The previous prime is 113161123. The next prime is 113161141. The reversal of 113161140 is 41161311.

113161140 is a `hidden beast` number, since 1 + 13 + 1 + 611 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54730404 + 58430736 = 7398^2 + 7644^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113161141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314157 + ... + 314516.

It is an arithmetic number, because the mean of its divisors is an integer number (9534889).

Almost surely, 2^113161140 is an apocalyptic number.

113161140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113161140 is an abundant number, since it is smaller than the sum of its proper divisors (230094864).

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

113161140 is a wasteful number, since it uses less digits than its factorization.

113161140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628688 (or 628683 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 113161140 is about 10637.7225006107. The cubic root of 113161140 is about 483.6885105026.

The spelling of 113161140 in words is "one hundred thirteen million, one hundred sixty-one thousand, one hundred forty".