3081312331 has 2 divisors, whose sum is σ = 3081312332. Its totient is φ = 3081312330.

The previous prime is 3081312317. The next prime is 3081312371. The reversal of 3081312331 is 1332131803.

3081312331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (1332131803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3081312331 - 2¹³ = 3081304139 is a prime.

It is a super-2 number, since 2×3081312331² = 18988971362345307122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3081312296 and 3081312305.

It is not a weakly prime, because it can be changed into another prime (3081312371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1540656165 + 1540656166.

It is an arithmetic number, because the mean of its divisors is an integer number (1540656166).

Almost surely, 2^3081312331 is an apocalyptic number.

3081312331 is a deficient number, since it is larger than the sum of its proper divisors (1).

3081312331 is an equidigital number, since it uses as much as digits as its factorization.

3081312331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3081312331 is about 55509.5697245079. The cubic root of 3081312331 is about 1455.1638838717.

The spelling of 3081312331 in words is "three billion, eighty-one million, three hundred twelve thousand, three hundred thirty-one".