231011203340 has 24 divisors (see below), whose sum is σ = 487663448832. Its totient is φ = 91920686720.

The previous prime is 231011203333. The next prime is 231011203387. The reversal of 231011203340 is 43302110132.

231011203340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 30233249 + ... + 30240888.

It is an arithmetic number, because the mean of its divisors is an integer number (20319310368).

Almost surely, 2^231011203340 is an apocalyptic number.

231011203340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231011203340 is an abundant number, since it is smaller than the sum of its proper divisors (256652245492).

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

231011203340 is a wasteful number, since it uses less digits than its factorization.

231011203340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60474337 (or 60474335 counting only the distinct ones).

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

Adding to 231011203340 its reverse (43302110132), we get a palindrome (274313313472).

The spelling of 231011203340 in words is "two hundred thirty-one billion, eleven million, two hundred three thousand, three hundred forty".