2531101121440 has 48 divisors (see below), whose sum is σ = 5981522833440. Its totient is φ = 1012136290560.

The previous prime is 2531101121407. The next prime is 2531101121447. The reversal of 2531101121440 is 441211011352.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2531101121447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841610 + ... + 2907529.

It is an arithmetic number, because the mean of its divisors is an integer number (124615059030).

Almost surely, 2^{2531101121440} is an apocalyptic number.

2531101121440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531101121440 is an abundant number, since it is smaller than the sum of its proper divisors (3450421712000).

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

2531101121440 is a wasteful number, since it uses less digits than its factorization.

2531101121440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752485 (or 4752477 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 2531101121440 its reverse (441211011352), we get a palindrome (2972312132792).

The spelling of 2531101121440 in words is "two trillion, five hundred thirty-one billion, one hundred one million, one hundred twenty-one thousand, four hundred forty".