113123213100 has 54 divisors (see below), whose sum is σ = 354578429660. Its totient is φ = 30166189920.

The previous prime is 113123213081. The next prime is 113123213129. The reversal of 113123213100 is 1312321311.

113123213100 is a `hidden beast` number, since 1 + 1 + 31 + 2 + 321 + 310 + 0 = 666.

It is a super-2 number, since 2×113123213100² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 62845330 + ... + 62847129.

Almost surely, 2^113123213100 is an apocalyptic number.

113123213100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113123213100 is an abundant number, since it is smaller than the sum of its proper divisors (241455216560).

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

113123213100 is a wasteful number, since it uses less digits than its factorization.

113123213100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125692479 (or 125692469 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 113123213100 its reverse (1312321311), we get a palindrome (114435534411).

The spelling of 113123213100 in words is "one hundred thirteen billion, one hundred twenty-three million, two hundred thirteen thousand, one hundred".