31313232011 has 2 divisors, whose sum is σ = 31313232012. Its totient is φ = 31313232010.

The previous prime is 31313232001. The next prime is 31313232037. The reversal of 31313232011 is 11023231313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31313232011 - 2³⁴ = 14133362827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31313232001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656616005 + 15656616006.

It is an arithmetic number, because the mean of its divisors is an integer number (15656616006).

Almost surely, 2^31313232011 is an apocalyptic number.

31313232011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313232011 is an equidigital number, since it uses as much as digits as its factorization.

31313232011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31313232011 its reverse (11023231313), we get a palindrome (42336463324).

The spelling of 31313232011 in words is "thirty-one billion, three hundred thirteen million, two hundred thirty-two thousand, eleven".