231100120 has 32 divisors (see below), whose sum is σ = 525132720. Its totient is φ = 91523200.

The previous prime is 231100117. The next prime is 231100123. The reversal of 231100120 is 21001132.

It is an interprime number because it is at equal distance from previous prime (231100117) and next prime (231100123).

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

It is a junction number, because it is equal to n+sod(n) for n = 231100097 and 231100106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231100123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24562 + ... + 32641.

Almost surely, 2^231100120 is an apocalyptic number.

231100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231100120 is an abundant number, since it is smaller than the sum of its proper divisors (294032600).

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

231100120 is a wasteful number, since it uses less digits than its factorization.

231100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57315 (or 57311 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 231100120 is about 15201.9775029435. The cubic root of 231100120 is about 613.6678769833.

Adding to 231100120 its reverse (21001132), we get a palindrome (252101252).

The spelling of 231100120 in words is "two hundred thirty-one million, one hundred thousand, one hundred twenty".