231032302140 has 96 divisors (see below), whose sum is σ = 685651163904. Its totient is φ = 57924613120.

The previous prime is 231032302139. The next prime is 231032302187. The reversal of 231032302140 is 41203230132.

231032302140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 873787 + ... + 1107053.

It is an arithmetic number, because the mean of its divisors is an integer number (7142199624).

Almost surely, 2^231032302140 is an apocalyptic number.

231032302140 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 231032302140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342825581952).

231032302140 is an abundant number, since it is smaller than the sum of its proper divisors (454618861764).

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

231032302140 is a wasteful number, since it uses less digits than its factorization.

231032302140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234267 (or 234265 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 231032302140 its reverse (41203230132), we get a palindrome (272235532272).

The spelling of 231032302140 in words is "two hundred thirty-one billion, thirty-two million, three hundred two thousand, one hundred forty".