868043781431 has 8 divisors (see below), whose sum is σ = 873687785424. Its totient is φ = 862401234240.

The previous prime is 868043781421. The next prime is 868043781433. The reversal of 868043781431 is 134187340868.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 868043781431 - 2¹⁰ = 868043780407 is a prime.

It is a super-2 number, since 2×868043781431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868043781433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844376 + ... + 1564946.

It is an arithmetic number, because the mean of its divisors is an integer number (109210973178).

Almost surely, 2^868043781431 is an apocalyptic number.

868043781431 is a deficient number, since it is larger than the sum of its proper divisors (5644003993).

868043781431 is a wasteful number, since it uses less digits than its factorization.

868043781431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728401.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 868043781431 in words is "eight hundred sixty-eight billion, forty-three million, seven hundred eighty-one thousand, four hundred thirty-one".