231240341424 has 80 divisors (see below), whose sum is σ = 624452389632. Its totient is φ = 73597649664.

The previous prime is 231240341419. The next prime is 231240341441. The reversal of 231240341424 is 424143042132.

It is a junction number, because it is equal to n+sod(n) for n = 231240341391 and 231240341400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435534 + ... + 807570.

Almost surely, 2^231240341424 is an apocalyptic number.

231240341424 is a gapful number since it is divisible by the number (24) 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 231240341424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312226194816).

231240341424 is an abundant number, since it is smaller than the sum of its proper divisors (393212048208).

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

231240341424 is a wasteful number, since it uses less digits than its factorization.

231240341424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372634 (or 372628 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 231240341424 its reverse (424143042132), we get a palindrome (655383383556).

The spelling of 231240341424 in words is "two hundred thirty-one billion, two hundred forty million, three hundred forty-one thousand, four hundred twenty-four".