231803320 has 96 divisors (see below), whose sum is σ = 610552080. Its totient is φ = 78973440.

The previous prime is 231803311. The next prime is 231803329. The reversal of 231803320 is 23308132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231803311) and next prime (231803329).

It is a junction number, because it is equal to n+sod(n) for n = 231803291 and 231803300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231803329) by changing a digit.

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, 444660 + ... + 445180.

Almost surely, 2^231803320 is an apocalyptic number.

231803320 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 231803320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305276040).

231803320 is an abundant number, since it is smaller than the sum of its proper divisors (378748760).

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

231803320 is a wasteful number, since it uses less digits than its factorization.

231803320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 231803320 is about 15225.0885054899. The cubic root of 231803320 is about 614.2896771745.

The spelling of 231803320 in words is "two hundred thirty-one million, eight hundred three thousand, three hundred twenty".