3161261 has 8 divisors (see below), whose sum is σ = 3321120. Its totient is φ = 3004848.

The previous prime is 3161237. The next prime is 3161273. The reversal of 3161261 is 1621613.

3161261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3161261 is a prime.

It is a super-2 number, since 2×3161261² = 19987142220242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161461) 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 7 ways as a sum of consecutive naturals, for example, 1130 + ... + 2756.

It is an arithmetic number, because the mean of its divisors is an integer number (415140).

Almost surely, 2^3161261 is an apocalyptic number.

It is an amenable number.

3161261 is a deficient number, since it is larger than the sum of its proper divisors (159859).

3161261 is a wasteful number, since it uses less digits than its factorization.

3161261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723.

The product of its digits is 216, while the sum is 20.

The square root of 3161261 is about 1777.9935320467. The cubic root of 3161261 is about 146.7641953479.

Adding to 3161261 its reverse (1621613), we get a palindrome (4782874).

The spelling of 3161261 in words is "three million, one hundred sixty-one thousand, two hundred sixty-one".