31284850664 has 16 divisors (see below), whose sum is σ = 59318187300. Its totient is φ = 15466667392.

The previous prime is 31284850643. The next prime is 31284850673. The reversal of 31284850664 is 46605848213.

It can be written as a sum of positive squares in 2 ways, for example, as 30885250564 + 399600100 = 175742^2 + 19990^2 .

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, 21968987 + ... + 21970410.

Almost surely, 2^31284850664 is an apocalyptic number.

It is an amenable number.

31284850664 is a deficient number, since it is larger than the sum of its proper divisors (28033336636).

31284850664 is a wasteful number, since it uses less digits than its factorization.

31284850664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43939492 (or 43939488 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 31284850664 in words is "thirty-one billion, two hundred eighty-four million, eight hundred fifty thousand, six hundred sixty-four".