31671880340 has 24 divisors (see below), whose sum is σ = 66514883400. Its totient is φ = 12668002688.

The previous prime is 31671880321. The next prime is 31671880363. The reversal of 31671880340 is 4308817613.

It can be written as a sum of positive squares in 4 ways, for example, as 247936516 + 31423943824 = 15746^2 + 177268^2 .

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 7 ways as a sum of consecutive naturals, for example, 406886 + ... + 478434.

It is an arithmetic number, because the mean of its divisors is an integer number (2771453475).

Almost surely, 2^31671880340 is an apocalyptic number.

It is an amenable number.

31671880340 is an abundant number, since it is smaller than the sum of its proper divisors (34843003060).

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

31671880340 is a wasteful number, since it uses less digits than its factorization.

31671880340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93691 (or 93689 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 31671880340 in words is "thirty-one billion, six hundred seventy-one million, eight hundred eighty thousand, three hundred forty".