100231120 has 40 divisors (see below), whose sum is σ = 254224800. Its totient is φ = 36447360.

The previous prime is 100231097. The next prime is 100231121. The reversal of 100231120 is 21132001.

It is a tau number, because it is divible by the number of its divisors (40).

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 = 100231097 and 100231106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100231121) 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, 56070 + ... + 57829.

It is an arithmetic number, because the mean of its divisors is an integer number (6355620).

Almost surely, 2^100231120 is an apocalyptic number.

100231120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100231120 is an abundant number, since it is smaller than the sum of its proper divisors (153993680).

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

100231120 is a wasteful number, since it uses less digits than its factorization.

100231120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113923 (or 113917 counting only the distinct ones).

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

The square root of 100231120 is about 10011.5493306481. The cubic root of 100231120 is about 464.5161962324.

Adding to 100231120 its reverse (21132001), we get a palindrome (121363121).

The spelling of 100231120 in words is "one hundred million, two hundred thirty-one thousand, one hundred twenty".