231929320 has 128 divisors (see below), whose sum is σ = 624245760. Its totient is φ = 75893760.

The previous prime is 231929311. The next prime is 231929329. The reversal of 231929320 is 23929132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231929311) and next prime (231929329).

It is not an unprimeable number, because it can be changed into a prime (231929329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 631777 + ... + 632143.

It is an arithmetic number, because the mean of its divisors is an integer number (4876920).

Almost surely, 2^231929320 is an apocalyptic number.

231929320 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 231929320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312122880).

231929320 is an abundant number, since it is smaller than the sum of its proper divisors (392316440).

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

231929320 is a wasteful number, since it uses less digits than its factorization.

231929320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 231929320 is about 15229.2258503182. The cubic root of 231929320 is about 614.4009589851.

The spelling of 231929320 in words is "two hundred thirty-one million, nine hundred twenty-nine thousand, three hundred twenty".