260161331 has 4 divisors (see below), whose sum is σ = 268553664. Its totient is φ = 251769000.

The previous prime is 260161313. The next prime is 260161333. The reversal of 260161331 is 133161062.

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: 133161062 = 2 ⋅66580531.

It is a cyclic number.

It is not a de Polignac number, because 260161331 - 2¹⁴ = 260144947 is a prime.

It is a super-2 number, since 2×260161331² = 135367836295383122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 260161297 and 260161306.

It is not an unprimeable number, because it can be changed into a prime (260161333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4196120 + ... + 4196181.

It is an arithmetic number, because the mean of its divisors is an integer number (67138416).

Almost surely, 2^260161331 is an apocalyptic number.

260161331 is a deficient number, since it is larger than the sum of its proper divisors (8392333).

260161331 is an equidigital number, since it uses as much as digits as its factorization.

260161331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8392332.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 260161331 is about 16129.5173827365. The cubic root of 260161331 is about 638.3824148729.

The spelling of 260161331 in words is "two hundred sixty million, one hundred sixty-one thousand, three hundred thirty-one".