3105139031 has 2 divisors, whose sum is σ = 3105139032. Its totient is φ = 3105139030.

The previous prime is 3105139013. The next prime is 3105139039. The reversal of 3105139031 is 1309315013.

3105139031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (3105139013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3105139031 - 2²² = 3100944727 is a prime.

It is a super-2 number, since 2×3105139031² = 19283776803679237922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3105139039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1552569515 + 1552569516.

It is an arithmetic number, because the mean of its divisors is an integer number (1552569516).

Almost surely, 2^3105139031 is an apocalyptic number.

3105139031 is a deficient number, since it is larger than the sum of its proper divisors (1).

3105139031 is an equidigital number, since it uses as much as digits as its factorization.

3105139031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 3105139031 is about 55723.7743786259. The cubic root of 3105139031 is about 1458.9050135600.

The spelling of 3105139031 in words is "three billion, one hundred five million, one hundred thirty-nine thousand, thirty-one".