231030663340 has 72 divisors (see below), whose sum is σ = 516341880432. Its totient is φ = 86814305280.

The previous prime is 231030663319. The next prime is 231030663431. The reversal of 231030663340 is 43366030132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3090039 + ... + 3163921.

It is an arithmetic number, because the mean of its divisors is an integer number (7171415006).

Almost surely, 2^231030663340 is an apocalyptic number.

231030663340 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 231030663340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258170940216).

231030663340 is an abundant number, since it is smaller than the sum of its proper divisors (285311217092).

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

231030663340 is a wasteful number, since it uses less digits than its factorization.

231030663340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74467 (or 74448 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 231030663340 its reverse (43366030132), we get a palindrome (274396693472).

The spelling of 231030663340 in words is "two hundred thirty-one billion, thirty million, six hundred sixty-three thousand, three hundred forty".