31661275027 has 8 divisors (see below), whose sum is σ = 31784543856. Its totient is φ = 31538180352.

The previous prime is 31661274977. The next prime is 31661275057. The reversal of 31661275027 is 72057216613.

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 31661275027 - 2¹⁹ = 31660750739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31661275057) 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, 326868 + ... + 412510.

It is an arithmetic number, because the mean of its divisors is an integer number (3973067982).

Almost surely, 2^31661275027 is an apocalyptic number.

31661275027 is a deficient number, since it is larger than the sum of its proper divisors (123268829).

31661275027 is a wasteful number, since it uses less digits than its factorization.

31661275027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87077.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 31661275027 in words is "thirty-one billion, six hundred sixty-one million, two hundred seventy-five thousand, twenty-seven".