2531450352240 has 120 divisors (see below), whose sum is σ = 8506768063248. Its totient is φ = 674631475200.

The previous prime is 2531450352191. The next prime is 2531450352257. The reversal of 2531450352240 is 422530541352.

2531450352240 is a `hidden beast` number, since 2 + 5 + 3 + 14 + 50 + 352 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2531450352195 and 2531450352204.

It is a congruent 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, 54687 + ... + 2250753.

Almost surely, 2^{2531450352240} is an apocalyptic number.

2531450352240 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 2531450352240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4253384031624).

2531450352240 is an abundant number, since it is smaller than the sum of its proper divisors (5975317711008).

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

2531450352240 is a wasteful number, since it uses less digits than its factorization.

2531450352240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197687 (or 2197678 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 2531450352240 its reverse (422530541352), we get a palindrome (2953980893592).

The spelling of 2531450352240 in words is "two trillion, five hundred thirty-one billion, four hundred fifty million, three hundred fifty-two thousand, two hundred forty".