231335240000 has 70 divisors (see below), whose sum is σ = 573636310434. Its totient is φ = 92534080000.

The previous prime is 231335239991. The next prime is 231335240009. The reversal of 231335240000 is 42533132.

It is an interprime number because it is at equal distance from previous prime (231335239991) and next prime (231335240009).

It can be written as a sum of positive squares in 5 ways, for example, as 141388032256 + 89947207744 = 376016^2 + 299912^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231335240009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2851691 + ... + 2931690.

Almost surely, 2^231335240000 is an apocalyptic number.

231335240000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231335240000 is an abundant number, since it is smaller than the sum of its proper divisors (342301070434).

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

231335240000 is an frugal number, since it uses more digits than its factorization.

231335240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5783413 (or 5783388 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 231335240000 its reverse (42533132), we get a palindrome (231377773132).

The spelling of 231335240000 in words is "two hundred thirty-one billion, three hundred thirty-five million, two hundred forty thousand".