31887643068853 has 16 divisors (see below), whose sum is σ = 37748378428992. Its totient is φ = 26554595184000.

The previous prime is 31887643068829. The next prime is 31887643068863. The reversal of 31887643068853 is 35886034678813.

It is a happy number.

It is not a de Polignac number, because 31887643068853 - 2⁵ = 31887643068821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31887643068863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 851090088 + ... + 851127553.

It is an arithmetic number, because the mean of its divisors is an integer number (2359273651812).

Almost surely, 2^{31887643068853} is an apocalyptic number.

It is an amenable number.

31887643068853 is a deficient number, since it is larger than the sum of its proper divisors (5860735360139).

31887643068853 is a wasteful number, since it uses less digits than its factorization.

31887643068853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702217796.

The product of its (nonzero) digits is 557383680, while the sum is 70.

The spelling of 31887643068853 in words is "thirty-one trillion, eight hundred eighty-seven billion, six hundred forty-three million, sixty-eight thousand, eight hundred fifty-three".