30261213 has 12 divisors (see below), whose sum is σ = 43829760. Its totient is φ = 20119176.

The previous prime is 30261211. The next prime is 30261221. The reversal of 30261213 is 31216203.

Added to its reverse (31216203) it gives a triangular number (61477416 = T₁₁₀₈₈).

It is not a de Polignac number, because 30261213 - 2¹ = 30261211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30261211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 943 + ... + 7836.

It is an arithmetic number, because the mean of its divisors is an integer number (3652480).

Almost surely, 2^30261213 is an apocalyptic number.

It is an amenable number.

30261213 is a deficient number, since it is larger than the sum of its proper divisors (13568547).

30261213 is a wasteful number, since it uses less digits than its factorization.

30261213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9168 (or 9165 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30261213 is about 5501.0192691900. The cubic root of 30261213 is about 311.6224785393.

Adding to 30261213 its reverse (31216203), we get a palindrome (61477416).

The spelling of 30261213 in words is "thirty million, two hundred sixty-one thousand, two hundred thirteen".