113123100 has 144 divisors (see below), whose sum is σ = 355664736. Its totient is φ = 27648000.

The previous prime is 113123089. The next prime is 113123137. The reversal of 113123100 is 1321311.

It is a super-2 number, since 2×113123100² = 25593671507220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208830 + ... + 209370.

It is an arithmetic number, because the mean of its divisors is an integer number (2469894).

Almost surely, 2^113123100 is an apocalyptic number.

113123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177832368).

113123100 is an abundant number, since it is smaller than the sum of its proper divisors (242541636).

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

113123100 is a wasteful number, since it uses less digits than its factorization.

113123100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 113123100 is about 10635.9343736223. The cubic root of 113123100 is about 483.6343058730.

Adding to 113123100 its reverse (1321311), we get a palindrome (114444411).

The spelling of 113123100 in words is "one hundred thirteen million, one hundred twenty-three thousand, one hundred".