23031100 has 18 divisors (see below), whose sum is σ = 49977704. Its totient is φ = 9212400.

The previous prime is 23031091. The next prime is 23031103. The reversal of 23031100 is 113032.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115056 + ... + 115255.

Almost surely, 2^23031100 is an apocalyptic number.

23031100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23031100 is an abundant number, since it is smaller than the sum of its proper divisors (26946604).

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

23031100 is a wasteful number, since it uses less digits than its factorization.

23031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230325 (or 230318 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 23031100 is about 4799.0728271198. The cubic root of 23031100 is about 284.5148203460.

Adding to 23031100 its reverse (113032), we get a palindrome (23144132).

It can be divided in two parts, 2303 and 1100, that added together give a triangular number (3403 = T₈₂).

The spelling of 23031100 in words is "twenty-three million, thirty-one thousand, one hundred".