2231708707536 has 720 divisors, whose sum is σ = 7598202683904. Its totient is φ = 562028544000.

The previous prime is 2231708707531. The next prime is 2231708707537. The reversal of 2231708707536 is 6357078071322.

It is a super-3 number, since 3×2231708707536³ (a number of 38 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231708707531) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2251976001 + ... + 2251976991.

Almost surely, 2^{2231708707536} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231708707536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3799101341952).

2231708707536 is an abundant number, since it is smaller than the sum of its proper divisors (5366493976368).

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

2231708707536 is a wasteful number, since it uses less digits than its factorization.

2231708707536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1248 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 51.

The spelling of 2231708707536 in words is "two trillion, two hundred thirty-one billion, seven hundred eight million, seven hundred seven thousand, five hundred thirty-six".