31112220112011 has 32 divisors (see below), whose sum is σ = 46540559370240. Its totient is φ = 20539716091200.

The previous prime is 31112220112009. The next prime is 31112220112013. The reversal of 31112220112011 is 11021102221113.

It is a happy number.

31112220112011 is a `hidden beast` number, since 311 + 1 + 2 + 220 + 1 + 120 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (31112220112009) and next prime (31112220112013).

It is not a de Polignac number, because 31112220112011 - 2¹ = 31112220112009 is a prime.

It is a super-2 number, since 2×31112220112011² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31112220112013) 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, 265696606 + ... + 265813676.

It is an arithmetic number, because the mean of its divisors is an integer number (1454392480320).

Almost surely, 2^{31112220112011} is an apocalyptic number.

31112220112011 is a deficient number, since it is larger than the sum of its proper divisors (15428339258229).

31112220112011 is a wasteful number, since it uses less digits than its factorization.

31112220112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212744 (or 212738 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 31112220112011 its reverse (11021102221113), we get a palindrome (42133322333124).

The spelling of 31112220112011 in words is "thirty-one trillion, one hundred twelve billion, two hundred twenty million, one hundred twelve thousand, eleven".