31880686877 has 8 divisors (see below), whose sum is σ = 34431427800. Its totient is φ = 29344000320.

The previous prime is 31880686867. The next prime is 31880686897. The reversal of 31880686877 is 77868608813.

It can be written as a sum of positive squares in 4 ways, for example, as 10684529956 + 21196156921 = 103366^2 + 145589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31880686877 - 2¹⁸ = 31880424733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31880686867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3508874 + ... + 3517947.

It is an arithmetic number, because the mean of its divisors is an integer number (4303928475).

Almost surely, 2^31880686877 is an apocalyptic number.

It is an amenable number.

31880686877 is a deficient number, since it is larger than the sum of its proper divisors (2550740923).

31880686877 is a wasteful number, since it uses less digits than its factorization.

31880686877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7027183.

The product of its (nonzero) digits is 21676032, while the sum is 62.

The spelling of 31880686877 in words is "thirty-one billion, eight hundred eighty million, six hundred eighty-six thousand, eight hundred seventy-seven".