31870963489 has 16 divisors (see below), whose sum is σ = 34814894400. Its totient is φ = 29060265024.

The previous prime is 31870963459. The next prime is 31870963517. The reversal of 31870963489 is 98436907813.

It is a cyclic number.

It is not a de Polignac number, because 31870963489 - 2⁷ = 31870963361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31870963459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83434 + ... + 265900.

It is an arithmetic number, because the mean of its divisors is an integer number (2175930900).

Almost surely, 2^31870963489 is an apocalyptic number.

It is an amenable number.

31870963489 is a deficient number, since it is larger than the sum of its proper divisors (2943930911).

31870963489 is a wasteful number, since it uses less digits than its factorization.

31870963489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182832.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 31870963489 in words is "thirty-one billion, eight hundred seventy million, nine hundred sixty-three thousand, four hundred eighty-nine".