231870100 has 72 divisors (see below), whose sum is σ = 627334848. Its totient is φ = 72268800.

The previous prime is 231870097. The next prime is 231870143. The reversal of 231870100 is 1078132.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 7357 + ... + 22756.

It is an arithmetic number, because the mean of its divisors is an integer number (8712984).

Almost surely, 2^231870100 is an apocalyptic number.

231870100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231870100 is an abundant number, since it is smaller than the sum of its proper divisors (395464748).

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

231870100 is a wasteful number, since it uses less digits than its factorization.

231870100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30145 (or 30138 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 231870100 is about 15227.2814382607. The cubic root of 231870100 is about 614.3486615553.

The spelling of 231870100 in words is "two hundred thirty-one million, eight hundred seventy thousand, one hundred".