3131120017 has 2 divisors, whose sum is σ = 3131120018. Its totient is φ = 3131120016.

The previous prime is 3131120009. The next prime is 3131120023. The reversal of 3131120017 is 7100211313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3101264721 + 29855296 = 55689^2 + 5464^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131120017 - 2³ = 3131120009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131119976 and 3131120003.

It is not a weakly prime, because it can be changed into another prime (3131120917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565560008 + 1565560009.

It is an arithmetic number, because the mean of its divisors is an integer number (1565560009).

Almost surely, 2^3131120017 is an apocalyptic number.

It is an amenable number.

3131120017 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131120017 is an equidigital number, since it uses as much as digits as its factorization.

3131120017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 3131120017 is about 55956.4117595115. The cubic root of 3131120017 is about 1462.9626487889.

The spelling of 3131120017 in words is "three billion, one hundred thirty-one million, one hundred twenty thousand, seventeen".