231342020 has 96 divisors (see below), whose sum is σ = 605875200. Its totient is φ = 72244224.

The previous prime is 231342011. The next prime is 231342031. The reversal of 231342020 is 20243132.

It is a self number, because there is not a number n which added to its sum of digits gives 231342020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142976 + ... + 144584.

It is an arithmetic number, because the mean of its divisors is an integer number (6311200).

Almost surely, 2^231342020 is an apocalyptic number.

231342020 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 231342020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302937600).

231342020 is an abundant number, since it is smaller than the sum of its proper divisors (374533180).

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

231342020 is a wasteful number, since it uses less digits than its factorization.

231342020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 231342020 is about 15209.9316237779. The cubic root of 231342020 is about 613.8819176842.

Adding to 231342020 its reverse (20243132), we get a palindrome (251585152).

The spelling of 231342020 in words is "two hundred thirty-one million, three hundred forty-two thousand, twenty".