30913229 has 4 divisors (see below), whose sum is σ = 30940800. Its totient is φ = 30885660.

The previous prime is 30913213. The next prime is 30913261. The reversal of 30913229 is 92231903.

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: 92231903 = 257 ⋅358879.

It is a cyclic number.

It is not a de Polignac number, because 30913229 - 2⁴ = 30913213 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 (30913829) 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, 12029 + ... + 14370.

It is an arithmetic number, because the mean of its divisors is an integer number (7735200).

Almost surely, 2^30913229 is an apocalyptic number.

It is an amenable number.

30913229 is a deficient number, since it is larger than the sum of its proper divisors (27571).

30913229 is a wasteful number, since it uses less digits than its factorization.

30913229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27570.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 30913229 is about 5559.9666365905. The cubic root of 30913229 is about 313.8446937762.

The spelling of 30913229 in words is "thirty million, nine hundred thirteen thousand, two hundred twenty-nine".