3101897 has 2 divisors, whose sum is σ = 3101898. Its totient is φ = 3101896.

The previous prime is 3101881. The next prime is 3101947. The reversal of 3101897 is 7981013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2886601 + 215296 = 1699^2 + 464^2 .

It is an emirp because it is prime and its reverse (7981013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3101897 - 2⁴ = 3101881 is a prime.

It is not a weakly prime, because it can be changed into another prime (3101827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550948 + 1550949.

It is an arithmetic number, because the mean of its divisors is an integer number (1550949).

Almost surely, 2^3101897 is an apocalyptic number.

It is an amenable number.

3101897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3101897 is an equidigital number, since it uses as much as digits as its factorization.

3101897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 3101897 is about 1761.2203155767. The cubic root of 3101897 is about 145.8397096169.

It can be divided in two parts, 310 and 1897, that multiplied together give a triangular number (588070 = T₁₀₈₄).

The spelling of 3101897 in words is "three million, one hundred one thousand, eight hundred ninety-seven".