231969600 has 252 divisors, whose sum is σ = 838344780. Its totient is φ = 60825600.

The previous prime is 231969599. The next prime is 231969643. The reversal of 231969600 is 6969132.

It can be written as a sum of positive squares in 6 ways, for example, as 84492864 + 147476736 = 9192^2 + 12144^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 35 ways as a sum of consecutive naturals, for example, 1281510 + ... + 1281690.

It is an arithmetic number, because the mean of its divisors is an integer number (3326765).

Almost surely, 2^231969600 is an apocalyptic number.

231969600 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 231969600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419172390).

231969600 is an abundant number, since it is smaller than the sum of its proper divisors (606375180).

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

231969600 is a wasteful number, since it uses less digits than its factorization.

231969600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 231969600 is about 15230.5482501452. The cubic root of 231969600 is about 614.4365253351.

The spelling of 231969600 in words is "two hundred thirty-one million, nine hundred sixty-nine thousand, six hundred".