31543531101104 has 80 divisors (see below), whose sum is σ = 67441941415680. Its totient is φ = 14172803124480.

The previous prime is 31543531101083. The next prime is 31543531101139. The reversal of 31543531101104 is 40110113534513.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8325482 + ... + 11506550.

It is an arithmetic number, because the mean of its divisors is an integer number (843024267696).

Almost surely, 2^{31543531101104} 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 31543531101104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33720970707840).

31543531101104 is an abundant number, since it is smaller than the sum of its proper divisors (35898410314576).

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

31543531101104 is a wasteful number, since it uses less digits than its factorization.

31543531101104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181738 (or 3181732 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 31543531101104 its reverse (40110113534513), we get a palindrome (71653644635617).

The spelling of 31543531101104 in words is "thirty-one trillion, five hundred forty-three billion, five hundred thirty-one million, one hundred one thousand, one hundred four".