31870421270 has 16 divisors (see below), whose sum is σ = 59860965600. Its totient is φ = 12193900224.

The previous prime is 31870421263. The next prime is 31870421333. The reversal of 31870421270 is 7212407813.

It is a self number, because there is not a number n which added to its sum of digits gives 31870421270.

It is a congruent number.

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, 69283295 + ... + 69283754.

It is an arithmetic number, because the mean of its divisors is an integer number (3741310350).

Almost surely, 2^31870421270 is an apocalyptic number.

31870421270 is a deficient number, since it is larger than the sum of its proper divisors (27990544330).

31870421270 is a wasteful number, since it uses less digits than its factorization.

31870421270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138567079.

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 31870421270 in words is "thirty-one billion, eight hundred seventy million, four hundred twenty-one thousand, two hundred seventy".