101231100 has 72 divisors (see below), whose sum is σ = 325447920. Its totient is φ = 26994240.

The previous prime is 101231099. The next prime is 101231111. The reversal of 101231100 is 1132101.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16047 + ... + 21446.

It is an arithmetic number, because the mean of its divisors is an integer number (4520110).

Almost surely, 2^101231100 is an apocalyptic number.

101231100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101231100 is an abundant number, since it is smaller than the sum of its proper divisors (224216820).

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

101231100 is a wasteful number, since it uses less digits than its factorization.

101231100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37516 (or 37503 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 101231100 is about 10061.3667063675. The cubic root of 101231100 is about 466.0558732517.

Adding to 101231100 its reverse (1132101), we get a palindrome (102363201).

The spelling of 101231100 in words is "one hundred one million, two hundred thirty-one thousand, one hundred".