231203103140 has 12 divisors (see below), whose sum is σ = 485526516636. Its totient is φ = 92481241248.

The previous prime is 231203103139. The next prime is 231203103199. The reversal of 231203103140 is 41301302132.

231203103140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 85628805376 + 145574297764 = 292624^2 + 381542^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 11560155157 = 231203103140 / (2 + 3 + 1 + 2 + 0 + 3 + 1 + 0 + 3 + 1 + 4 + 0).

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 3 ways as a sum of consecutive naturals, for example, 5780077559 + ... + 5780077598.

It is an arithmetic number, because the mean of its divisors is an integer number (40460543053).

Almost surely, 2^231203103140 is an apocalyptic number.

231203103140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231203103140 is an abundant number, since it is smaller than the sum of its proper divisors (254323413496).

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

231203103140 is a wasteful number, since it uses less digits than its factorization.

231203103140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11560155166 (or 11560155164 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231203103140 its reverse (41301302132), we get a palindrome (272504405272).

The spelling of 231203103140 in words is "two hundred thirty-one billion, two hundred three million, one hundred three thousand, one hundred forty".