231303202140 has 96 divisors (see below), whose sum is σ = 651551040000. Its totient is φ = 61309533952.

The previous prime is 231303202129. The next prime is 231303202157. The reversal of 231303202140 is 41202303132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42839161 + ... + 42844559.

It is an arithmetic number, because the mean of its divisors is an integer number (6786990000).

Almost surely, 2^231303202140 is an apocalyptic number.

231303202140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231303202140 is an abundant number, since it is smaller than the sum of its proper divisors (420247837860).

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

231303202140 is a wasteful number, since it uses less digits than its factorization.

231303202140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9579 (or 9577 counting only the distinct ones).

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

Adding to 231303202140 its reverse (41202303132), we get a palindrome (272505505272).

The spelling of 231303202140 in words is "two hundred thirty-one billion, three hundred three million, two hundred two thousand, one hundred forty".