30521141 has 4 divisors (see below), whose sum is σ = 34881312. Its totient is φ = 26160972.

The previous prime is 30521131. The next prime is 30521149. The reversal of 30521141 is 14112503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14112503 = 37 ⋅381419.

It is a cyclic number.

It is not a de Polignac number, because 30521141 - 2¹⁴ = 30504757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30521149) 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, 2180075 + ... + 2180088.

It is an arithmetic number, because the mean of its divisors is an integer number (8720328).

Almost surely, 2^30521141 is an apocalyptic number.

It is an amenable number.

30521141 is a deficient number, since it is larger than the sum of its proper divisors (4360171).

30521141 is an equidigital number, since it uses as much as digits as its factorization.

30521141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360170.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 30521141 is about 5524.5941932417. The cubic root of 30521141 is about 312.5121608068.

Adding to 30521141 its reverse (14112503), we get a palindrome (44633644).

The spelling of 30521141 in words is "thirty million, five hundred twenty-one thousand, one hundred forty-one".