31870007427 has 16 divisors (see below), whose sum is σ = 42671982240. Its totient is φ = 21157404672.

The previous prime is 31870007399. The next prime is 31870007471. The reversal of 31870007427 is 72470007813.

It is not a de Polignac number, because 31870007427 - 2¹¹ = 31870005379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31870007527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4663449 + ... + 4670277.

It is an arithmetic number, because the mean of its divisors is an integer number (2666998890).

Almost surely, 2^31870007427 is an apocalyptic number.

31870007427 is a deficient number, since it is larger than the sum of its proper divisors (10801974813).

31870007427 is a wasteful number, since it uses less digits than its factorization.

31870007427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142.

The product of its (nonzero) digits is 65856, while the sum is 39.

The spelling of 31870007427 in words is "thirty-one billion, eight hundred seventy million, seven thousand, four hundred twenty-seven".