3131120011 has 4 divisors (see below), whose sum is σ = 3132065592. Its totient is φ = 3130174432.

The previous prime is 3131120009. The next prime is 3131120017. The reversal of 3131120011 is 1100211313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3131120011 - 2¹ = 3131120009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131119973 and 3131120000.

It is not an unprimeable number, because it can be changed into a prime (3131120017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467806 + ... + 474451.

It is an arithmetic number, because the mean of its divisors is an integer number (783016398).

Almost surely, 2^3131120011 is an apocalyptic number.

3131120011 is a deficient number, since it is larger than the sum of its proper divisors (945581).

3131120011 is an equidigital number, since it uses as much as digits as its factorization.

3131120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945580.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 3131120011 is about 55956.4117058984. The cubic root of 3131120011 is about 1462.9626478544.

Adding to 3131120011 its reverse (1100211313), we get a palindrome (4231331324).

The spelling of 3131120011 in words is "three billion, one hundred thirty-one million, one hundred twenty thousand, eleven".