231043420 has 48 divisors (see below), whose sum is σ = 515773440. Its totient is φ = 86688576.

The previous prime is 231043411. The next prime is 231043453. The reversal of 231043420 is 24340132.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36189 + ... + 42091.

It is an arithmetic number, because the mean of its divisors is an integer number (10745280).

Almost surely, 2^231043420 is an apocalyptic number.

231043420 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 231043420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257886720).

231043420 is an abundant number, since it is smaller than the sum of its proper divisors (284730020).

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

231043420 is a wasteful number, since it uses less digits than its factorization.

231043420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6034 (or 6032 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 231043420 is about 15200.1124995837. The cubic root of 231043420 is about 613.6176854405.

Adding to 231043420 its reverse (24340132), we get a palindrome (255383552).

The spelling of 231043420 in words is "two hundred thirty-one million, forty-three thousand, four hundred twenty".