31534771968 has 108 divisors (see below), whose sum is σ = 103911506608. Its totient is φ = 9009930240.

The previous prime is 31534771949. The next prime is 31534771981. The reversal of 31534771968 is 86917743513.

31534771968 is a `hidden beast` number, since 3 + 153 + 477 + 19 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 961513 + ... + 993768.

Almost surely, 2^31534771968 is an apocalyptic number.

It is an amenable number.

31534771968 is an abundant number, since it is smaller than the sum of its proper divisors (72376734640).

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

31534771968 is a wasteful number, since it uses less digits than its factorization.

31534771968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955310 (or 1955293 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 31534771968 in words is "thirty-one billion, five hundred thirty-four million, seven hundred seventy-one thousand, nine hundred sixty-eight".