31786948540 has 12 divisors (see below), whose sum is σ = 66752591976. Its totient is φ = 12714779408.

The previous prime is 31786948513. The next prime is 31786948549. The reversal of 31786948540 is 4584968713.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31786948549) 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, 794673694 + ... + 794673733.

It is an arithmetic number, because the mean of its divisors is an integer number (5562715998).

Almost surely, 2^31786948540 is an apocalyptic number.

It is an amenable number.

31786948540 is an abundant number, since it is smaller than the sum of its proper divisors (34965643436).

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

31786948540 is a wasteful number, since it uses less digits than its factorization.

31786948540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589347436 (or 1589347434 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 31786948540 in words is "thirty-one billion, seven hundred eighty-six million, nine hundred forty-eight thousand, five hundred forty".