13430261 has 8 divisors (see below), whose sum is σ = 14551320. Its totient is φ = 12395136.

The previous prime is 13430243. The next prime is 13430267. The reversal of 13430261 is 16203431.

It can be written as a sum of positive squares in 4 ways, for example, as 3783025 + 9647236 = 1945^2 + 3106^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13430261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13430267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (1818915).

Almost surely, 2^13430261 is an apocalyptic number.

It is an amenable number.

13430261 is a deficient number, since it is larger than the sum of its proper divisors (1121059).

13430261 is an frugal number, since it uses more digits than its factorization.

13430261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152 (or 6126 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13430261 is about 3664.7320502323. The cubic root of 13430261 is about 237.6994358051.

Adding to 13430261 its reverse (16203431), we get a palindrome (29633692).

The spelling of 13430261 in words is "thirteen million, four hundred thirty thousand, two hundred sixty-one".