31340535540 has 96 divisors (see below), whose sum is σ = 91629619200. Its totient is φ = 7988804736.

The previous prime is 31340535533. The next prime is 31340535553. The reversal of 31340535540 is 4553504313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2337937 + ... + 2351303.

It is an arithmetic number, because the mean of its divisors is an integer number (954475200).

Almost surely, 2^31340535540 is an apocalyptic number.

31340535540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31340535540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45814809600).

31340535540 is an abundant number, since it is smaller than the sum of its proper divisors (60289083660).

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

31340535540 is a wasteful number, since it uses less digits than its factorization.

31340535540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15101 (or 15099 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 31340535540 in words is "thirty-one billion, three hundred forty million, five hundred thirty-five thousand, five hundred forty".