231301213040 has 80 divisors (see below), whose sum is σ = 563341497408. Its totient is φ = 88153325568.

The previous prime is 231301213021. The next prime is 231301213051. The reversal of 231301213040 is 40312103132.

231301213040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 228314 + ... + 717446.

Almost surely, 2^231301213040 is an apocalyptic number.

231301213040 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 231301213040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281670748704).

231301213040 is an abundant number, since it is smaller than the sum of its proper divisors (332040284368).

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

231301213040 is a wasteful number, since it uses less digits than its factorization.

231301213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489426 (or 489420 counting only the distinct ones).

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

Adding to 231301213040 its reverse (40312103132), we get a palindrome (271613316172).

The spelling of 231301213040 in words is "two hundred thirty-one billion, three hundred one million, two hundred thirteen thousand, forty".