31132011211 has 16 divisors (see below), whose sum is σ = 36082579968. Its totient is φ = 26307547200.

The previous prime is 31132011173. The next prime is 31132011217. The reversal of 31132011211 is 11211023113.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31132011211 - 2⁷ = 31132011083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132011217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281306 + ... + 1305376.

It is an arithmetic number, because the mean of its divisors is an integer number (2255161248).

Almost surely, 2^31132011211 is an apocalyptic number.

31132011211 is a deficient number, since it is larger than the sum of its proper divisors (4950568757).

31132011211 is a wasteful number, since it uses less digits than its factorization.

31132011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26682.

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

Adding to 31132011211 its reverse (11211023113), we get a palindrome (42343034324).

The spelling of 31132011211 in words is "thirty-one billion, one hundred thirty-two million, eleven thousand, two hundred eleven".