231229880 has 32 divisors (see below), whose sum is σ = 594591840. Its totient is φ = 79278720.

The previous prime is 231229807. The next prime is 231229883. The reversal of 231229880 is 88922132.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 231229880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231229883) 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 7 ways as a sum of consecutive naturals, for example, 412631 + ... + 413190.

It is an arithmetic number, because the mean of its divisors is an integer number (18580995).

Almost surely, 2^231229880 is an apocalyptic number.

231229880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231229880 is an abundant number, since it is smaller than the sum of its proper divisors (363361960).

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

231229880 is a wasteful number, since it uses less digits than its factorization.

231229880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825839 (or 825835 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 231229880 is about 15206.2447698306. The cubic root of 231229880 is about 613.7827112590.

The spelling of 231229880 in words is "two hundred thirty-one million, two hundred twenty-nine thousand, eight hundred eighty".