30505141 has 6 divisors (see below), whose sum is σ = 30790370. Its totient is φ = 30222528.

The previous prime is 30505133. The next prime is 30505151. The reversal of 30505141 is 14150503.

It can be written as a sum of positive squares in 3 ways, for example, as 4708900 + 25796241 = 2170^2 + 5079^2 .

It is not a de Polignac number, because 30505141 - 2³ = 30505133 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 (30505121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11575 + ... + 13963.

Almost surely, 2^30505141 is an apocalyptic number.

It is an amenable number.

30505141 is a deficient number, since it is larger than the sum of its proper divisors (285229).

30505141 is an equidigital number, since it uses as much as digits as its factorization.

30505141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615 (or 2502 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 30505141 is about 5523.1459332522. The cubic root of 30505141 is about 312.4575421784.

Adding to 30505141 its reverse (14150503), we get a palindrome (44655644).

The spelling of 30505141 in words is "thirty million, five hundred five thousand, one hundred forty-one".