31720674434 has 16 divisors (see below), whose sum is σ = 50390797248. Its totient is φ = 14944326672.

The previous prime is 31720674421. The next prime is 31720674463. The reversal of 31720674434 is 43447602713.

It is a junction number, because it is equal to n+sod(n) for n = 31720674391 and 31720674400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5143037 + ... + 5149200.

It is an arithmetic number, because the mean of its divisors is an integer number (3149424828).

Almost surely, 2^31720674434 is an apocalyptic number.

31720674434 is a deficient number, since it is larger than the sum of its proper divisors (18670122814).

31720674434 is a wasteful number, since it uses less digits than its factorization.

31720674434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292329.

The product of its (nonzero) digits is 338688, while the sum is 41.

The spelling of 31720674434 in words is "thirty-one billion, seven hundred twenty million, six hundred seventy-four thousand, four hundred thirty-four".