261230 has 16 divisors (see below), whose sum is σ = 476064. Its totient is φ = 103200.

The previous prime is 261229. The next prime is 261241. The reversal of 261230 is 32162.

It is a super-2 number, since 2×261230² = 136482225800, which contains 22 as substring.

It is a nialpdrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1424 + ... + 1596.

It is an arithmetic number, because the mean of its divisors is an integer number (29754).

2²⁶¹²³⁰ is an apocalyptic number.

261230 is a deficient number, since it is larger than the sum of its proper divisors (214834).

261230 is a wasteful number, since it uses less digits than its factorization.

261230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 261230 is about 511.1066424925. The cubic root of 261230 is about 63.9255318747.

Adding to 261230 its reverse (32162), we get a palindrome (293392).

The spelling of 261230 in words is "two hundred sixty-one thousand, two hundred thirty".