31740976687 has 8 divisors (see below), whose sum is σ = 36596424096. Its totient is φ = 26965784832.

The previous prime is 31740976681. The next prime is 31740976697. The reversal of 31740976687 is 78667904713.

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

It is not a de Polignac number, because 31740976687 - 2³ = 31740976679 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 (31740976681) 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, 20063038 + ... + 20064619.

It is an arithmetic number, because the mean of its divisors is an integer number (4574553012).

Almost surely, 2^31740976687 is an apocalyptic number.

31740976687 is a deficient number, since it is larger than the sum of its proper divisors (4855447409).

31740976687 is a wasteful number, since it uses less digits than its factorization.

31740976687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40127777.

The product of its (nonzero) digits is 10668672, while the sum is 58.

The spelling of 31740976687 in words is "thirty-one billion, seven hundred forty million, nine hundred seventy-six thousand, six hundred eighty-seven".