31132112011 has 32 divisors (see below), whose sum is σ = 41821452288. Its totient is φ = 22381107840.

The previous prime is 31132112003. The next prime is 31132112057. The reversal of 31132112011 is 11021123113.

It is a happy number.

It is not a de Polignac number, because 31132112011 - 2³ = 31132112003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31132112311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2232286 + ... + 2246188.

It is an arithmetic number, because the mean of its divisors is an integer number (1306920384).

Almost surely, 2^31132112011 is an apocalyptic number.

31132112011 is a deficient number, since it is larger than the sum of its proper divisors (10689340277).

31132112011 is a wasteful number, since it uses less digits than its factorization.

31132112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16171.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31132112011 its reverse (11021123113), we get a palindrome (42153235124).

The spelling of 31132112011 in words is "thirty-one billion, one hundred thirty-two million, one hundred twelve thousand, eleven".