31887328476 has 12 divisors (see below), whose sum is σ = 74403766472. Its totient is φ = 10629109488.

The previous prime is 31887328457. The next prime is 31887328477. The reversal of 31887328476 is 67482378813.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31887328477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328638675 + ... + 1328638698.

Almost surely, 2^31887328476 is an apocalyptic number.

It is an amenable number.

31887328476 is an abundant number, since it is smaller than the sum of its proper divisors (42516437996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31887328476 is a wasteful number, since it uses less digits than its factorization.

31887328476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657277380 (or 2657277378 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 57.

The spelling of 31887328476 in words is "thirty-one billion, eight hundred eighty-seven million, three hundred twenty-eight thousand, four hundred seventy-six".