231489100 has 36 divisors (see below), whose sum is σ = 513029664. Its totient is φ = 90623680.

The previous prime is 231489091. The next prime is 231489109. The reversal of 231489100 is 1984132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231489091) and next prime (231489109).

It is not an unprimeable number, because it can be changed into a prime (231489109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19927 + ... + 29326.

It is an arithmetic number, because the mean of its divisors is an integer number (14250824).

Almost surely, 2^231489100 is an apocalyptic number.

231489100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231489100 is an abundant number, since it is smaller than the sum of its proper divisors (281540564).

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

231489100 is a wasteful number, since it uses less digits than its factorization.

231489100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49314 (or 49307 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 231489100 is about 15214.7658542614. The cubic root of 231489100 is about 614.0119857464.

The spelling of 231489100 in words is "two hundred thirty-one million, four hundred eighty-nine thousand, one hundred".