3100649 has 2 divisors, whose sum is σ = 3100650. Its totient is φ = 3100648.

The previous prime is 3100633. The next prime is 3100661. The reversal of 3100649 is 9460013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1708249 + 1392400 = 1307^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 3100649 - 2⁴ = 3100633 is a prime.

It is a super-2 number, since 2×3100649² = 19228048442402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3100549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550324 + 1550325.

It is an arithmetic number, because the mean of its divisors is an integer number (1550325).

Almost surely, 2^3100649 is an apocalyptic number.

It is an amenable number.

3100649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3100649 is an equidigital number, since it uses as much as digits as its factorization.

3100649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 3100649 is about 1760.8659801359. The cubic root of 3100649 is about 145.8201482138.

The spelling of 3100649 in words is "three million, one hundred thousand, six hundred forty-nine".