3161761 has 4 divisors (see below), whose sum is σ = 3247252. Its totient is φ = 3076272.

The previous prime is 3161749. The next prime is 3161773. The reversal of 3161761 is 1671613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1671613 = 31 ⋅53923.

It is an interprime number because it is at equal distance from previous prime (3161749) and next prime (3161773).

It can be written as a sum of positive squares in 2 ways, for example, as 2608225 + 553536 = 1615^2 + 744^2 .

It is a cyclic number.

It is not a de Polignac number, because 3161761 - 2¹³ = 3153569 is a prime.

It is a super-2 number, since 2×3161761² = 19993465242242, which contains 22 as substring.

It is a Duffinian number.

3161761 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3161461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42690 + ... + 42763.

It is an arithmetic number, because the mean of its divisors is an integer number (811813).

Almost surely, 2^3161761 is an apocalyptic number.

It is an amenable number.

3161761 is a deficient number, since it is larger than the sum of its proper divisors (85491).

3161761 is an equidigital number, since it uses as much as digits as its factorization.

3161761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85490.

The product of its digits is 756, while the sum is 25.

The square root of 3161761 is about 1778.1341344229. The cubic root of 3161761 is about 146.7719325799.

The spelling of 3161761 in words is "three million, one hundred sixty-one thousand, seven hundred sixty-one".