231971300 has 72 divisors (see below), whose sum is σ = 552152160. Its totient is φ = 83891200.

The previous prime is 231971279. The next prime is 231971309. The reversal of 231971300 is 3179132.

It is a self number, because there is not a number n which added to its sum of digits gives 231971300.

It is not an unprimeable number, because it can be changed into a prime (231971309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249236 + ... + 250164.

It is an arithmetic number, because the mean of its divisors is an integer number (7668780).

Almost surely, 2^231971300 is an apocalyptic number.

231971300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231971300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276076080).

231971300 is an abundant number, since it is smaller than the sum of its proper divisors (320180860).

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

231971300 is a wasteful number, since it uses less digits than its factorization.

231971300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 231971300 is about 15230.6040589334. The cubic root of 231971300 is about 614.4380263070.

The spelling of 231971300 in words is "two hundred thirty-one million, nine hundred seventy-one thousand, three hundred".