31043743104 has 128 divisors (see below), whose sum is σ = 94691088000. Its totient is φ = 8912056320.

The previous prime is 31043743051. The next prime is 31043743109. The reversal of 31043743104 is 40134734013.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31043743109) 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, 113149 + ... + 273660.

It is an arithmetic number, because the mean of its divisors is an integer number (739774125).

Almost surely, 2^31043743104 is an apocalyptic number.

It is an amenable number.

31043743104 is an abundant number, since it is smaller than the sum of its proper divisors (63647344896).

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

31043743104 is a wasteful number, since it uses less digits than its factorization.

31043743104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386856 (or 386844 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

Subtracting 31043743104 from its reverse (40134734013), we obtain a palindrome (9090990909).

The spelling of 31043743104 in words is "thirty-one billion, forty-three million, seven hundred forty-three thousand, one hundred four".