2131012535250 has 128 divisors (see below), whose sum is σ = 5358041395200. Its totient is φ = 564106732800.

The previous prime is 2131012535237. The next prime is 2131012535251. The reversal of 2131012535250 is 525352101312.

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

It is not an unprimeable number, because it can be changed into a prime (2131012535251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130576591 + ... + 130592909.

It is an arithmetic number, because the mean of its divisors is an integer number (41859698400).

Almost surely, 2^{2131012535250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131012535250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2679020697600).

2131012535250 is an abundant number, since it is smaller than the sum of its proper divisors (3227028859950).

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

2131012535250 is a wasteful number, since it uses less digits than its factorization.

2131012535250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17605 (or 17595 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 2131012535250 its reverse (525352101312), we get a palindrome (2656364636562).

The spelling of 2131012535250 in words is "two trillion, one hundred thirty-one billion, twelve million, five hundred thirty-five thousand, two hundred fifty".