113185930 has 32 divisors (see below), whose sum is σ = 239355648. Its totient is φ = 37992000.

The previous prime is 113185889. The next prime is 113185931. The reversal of 113185930 is 39581311.

It is a super-2 number, since 2×113185930² = 25622109499929800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113185892 and 113185901.

It is not an unprimeable number, because it can be changed into a prime (113185931) 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, 38146 + ... + 41005.

It is an arithmetic number, because the mean of its divisors is an integer number (7479864).

Almost surely, 2^113185930 is an apocalyptic number.

113185930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

113185930 is an abundant number, since it is smaller than the sum of its proper divisors (126169718).

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

113185930 is a wasteful number, since it uses less digits than its factorization.

113185930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79182.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 113185930 is about 10638.8876298230. The cubic root of 113185930 is about 483.7238281705.

The spelling of 113185930 in words is "one hundred thirteen million, one hundred eighty-five thousand, nine hundred thirty".