232511221041240 has 128 divisors (see below), whose sum is σ = 701146103616000. Its totient is φ = 61682710898688.

The previous prime is 232511221041227. The next prime is 232511221041317. The reversal of 232511221041240 is 42140122115232.

It is a super-2 number, since 2×232511221041240² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 232511221041198 and 232511221041207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11609952 + ... + 24491088.

It is an arithmetic number, because the mean of its divisors is an integer number (5477703934500).

Almost surely, 2^{232511221041240} is an apocalyptic number.

232511221041240 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 232511221041240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350573051808000).

232511221041240 is an abundant number, since it is smaller than the sum of its proper divisors (468634882574760).

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

232511221041240 is a wasteful number, since it uses less digits than its factorization.

232511221041240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12881929 (or 12881925 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 232511221041240 its reverse (42140122115232), we get a palindrome (274651343156472).

The spelling of 232511221041240 in words is "two hundred thirty-two trillion, five hundred eleven billion, two hundred twenty-one million, forty-one thousand, two hundred forty".