3161657 has 4 divisors (see below), whose sum is σ = 3328080. Its totient is φ = 2995236.

The previous prime is 3161651. The next prime is 3161681. The reversal of 3161657 is 7561613.

3161657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 3161657 - 2⁶ = 3161593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3161651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83183 + ... + 83220.

It is an arithmetic number, because the mean of its divisors is an integer number (832020).

Almost surely, 2^3161657 is an apocalyptic number.

It is an amenable number.

3161657 is a deficient number, since it is larger than the sum of its proper divisors (166423).

3161657 is a wasteful number, since it uses less digits than its factorization.

3161657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166422.

The product of its digits is 3780, while the sum is 29.

The square root of 3161657 is about 1778.1048900445. The cubic root of 3161657 is about 146.7703233029.

The spelling of 3161657 in words is "three million, one hundred sixty-one thousand, six hundred fifty-seven".