31020443408 has 20 divisors (see below), whose sum is σ = 60274332300. Its totient is φ = 15465777024.

The previous prime is 31020443381. The next prime is 31020443411. The reversal of 31020443408 is 80434402013.

It can be written as a sum of positive squares in 2 ways, for example, as 22054626064 + 8965817344 = 148508^2 + 94688^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2772035 + ... + 2783202.

It is an arithmetic number, because the mean of its divisors is an integer number (3013716615).

Almost surely, 2^31020443408 is an apocalyptic number.

It is an amenable number.

31020443408 is a deficient number, since it is larger than the sum of its proper divisors (29253888892).

31020443408 is a wasteful number, since it uses less digits than its factorization.

31020443408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555594 (or 5555588 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 31020443408 in words is "thirty-one billion, twenty million, four hundred forty-three thousand, four hundred eight".