3115997 has 4 divisors (see below), whose sum is σ = 3155520. Its totient is φ = 3076476.

The previous prime is 3115993. The next prime is 3115999. The reversal of 3115997 is 7995113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7995113 = 7 ⋅1142159.

It is a cyclic number.

It is not a de Polignac number, because 3115997 - 2² = 3115993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115991) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19643 + ... + 19800.

It is an arithmetic number, because the mean of its divisors is an integer number (788880).

Almost surely, 2^3115997 is an apocalyptic number.

It is an amenable number.

3115997 is a deficient number, since it is larger than the sum of its proper divisors (39523).

3115997 is an equidigital number, since it uses as much as digits as its factorization.

3115997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39522.

The product of its digits is 8505, while the sum is 35.

The square root of 3115997 is about 1765.2186833364. The cubic root of 3115997 is about 146.0603522301.

The spelling of 3115997 in words is "three million, one hundred fifteen thousand, nine hundred ninety-seven".