31132131011 has 8 divisors (see below), whose sum is σ = 32209146480. Its totient is φ = 30055348512.

The previous prime is 31132131007. The next prime is 31132131061. The reversal of 31132131011 is 11013123113.

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

It is not a de Polignac number, because 31132131011 - 2² = 31132131007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132131061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239516 + ... + 345878.

It is an arithmetic number, because the mean of its divisors is an integer number (4026143310).

Almost surely, 2^31132131011 is an apocalyptic number.

31132131011 is a deficient number, since it is larger than the sum of its proper divisors (1077015469).

31132131011 is a wasteful number, since it uses less digits than its factorization.

31132131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116485.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 31132131011 its reverse (11013123113), we get a palindrome (42145254124).

The spelling of 31132131011 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirty-one thousand, eleven".