31711272061 has 8 divisors (see below), whose sum is σ = 38148898880. Its totient is φ = 25750506528.

The previous prime is 31711272017. The next prime is 31711272067. The reversal of 31711272061 is 16027211713.

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 31711272061 - 2¹¹ = 31711270013 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 (31711272067) by changing a digit.

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, 119215176 + ... + 119215441.

It is an arithmetic number, because the mean of its divisors is an integer number (4768612360).

Almost surely, 2^31711272061 is an apocalyptic number.

It is an amenable number.

31711272061 is a deficient number, since it is larger than the sum of its proper divisors (6437626819).

31711272061 is a wasteful number, since it uses less digits than its factorization.

31711272061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238430643.

The product of its (nonzero) digits is 3528, while the sum is 31.

Adding to 31711272061 its reverse (16027211713), we get a palindrome (47738483774).

The spelling of 31711272061 in words is "thirty-one billion, seven hundred eleven million, two hundred seventy-two thousand, sixty-one".