30261361 has 4 divisors (see below), whose sum is σ = 32589172. Its totient is φ = 27933552.

The previous prime is 30261359. The next prime is 30261389. The reversal of 30261361 is 16316203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16316203 = 1279 ⋅12757.

It can be written as a sum of positive squares in 2 ways, for example, as 10627600 + 19633761 = 3260^2 + 4431^2 .

It is a cyclic number.

It is not a de Polignac number, because 30261361 - 2¹ = 30261359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30261331) 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, 1163886 + ... + 1163911.

It is an arithmetic number, because the mean of its divisors is an integer number (8147293).

Almost surely, 2^30261361 is an apocalyptic number.

It is an amenable number.

30261361 is a deficient number, since it is larger than the sum of its proper divisors (2327811).

30261361 is a wasteful number, since it uses less digits than its factorization.

30261361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327810.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30261361 is about 5501.0327212261. The cubic root of 30261361 is about 311.6229865609.

Adding to 30261361 its reverse (16316203), we get a palindrome (46577564).

The spelling of 30261361 in words is "thirty million, two hundred sixty-one thousand, three hundred sixty-one".