231483840 has 448 divisors, whose sum is σ = 926592000. Its totient is φ = 48771072.

The previous prime is 231483839. The next prime is 231483841. The reversal of 231483840 is 48384132.

It is an interprime number because it is at equal distance from previous prime (231483839) and next prime (231483841).

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×231483840² = 107169536362291200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231483841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6256302 + ... + 6256338.

Almost surely, 2^231483840 is an apocalyptic number.

231483840 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 231483840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463296000).

231483840 is an abundant number, since it is smaller than the sum of its proper divisors (695108160).

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

231483840 is a wasteful number, since it uses less digits than its factorization.

231483840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 231483840 is about 15214.5929948849. The cubic root of 231483840 is about 614.0073350919.

The spelling of 231483840 in words is "two hundred thirty-one million, four hundred eighty-three thousand, eight hundred forty".