231012300040 has 64 divisors (see below), whose sum is σ = 532713749760. Its totient is φ = 90119078400.

The previous prime is 231012300031. The next prime is 231012300047. The reversal of 231012300040 is 40003210132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 231012299987 and 231012300023.

It is not an unprimeable number, because it can be changed into a prime (231012300047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314940 + ... + 749140.

It is an arithmetic number, because the mean of its divisors is an integer number (8323652340).

Almost surely, 2^231012300040 is an apocalyptic number.

231012300040 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 231012300040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266356874880).

231012300040 is an abundant number, since it is smaller than the sum of its proper divisors (301701449720).

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

231012300040 is a wasteful number, since it uses less digits than its factorization.

231012300040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434542 (or 434538 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 231012300040 its reverse (40003210132), we get a palindrome (271015510172).

The spelling of 231012300040 in words is "two hundred thirty-one billion, twelve million, three hundred thousand, forty".