30213293 has 4 divisors (see below), whose sum is σ = 32959968. Its totient is φ = 27466620.

The previous prime is 30213289. The next prime is 30213307. The reversal of 30213293 is 39231203.

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: 39231203 = 11 ⋅3566473.

It is a cyclic number.

It is not a de Polignac number, because 30213293 - 2² = 30213289 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 (30213203) 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, 1373321 + ... + 1373342.

It is an arithmetic number, because the mean of its divisors is an integer number (8239992).

Almost surely, 2^30213293 is an apocalyptic number.

It is an amenable number.

30213293 is a deficient number, since it is larger than the sum of its proper divisors (2746675).

30213293 is a wasteful number, since it uses less digits than its factorization.

30213293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746674.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 30213293 is about 5496.6619870609. The cubic root of 30213293 is about 311.4579022058.

Adding to 30213293 its reverse (39231203), we get a palindrome (69444496).

The spelling of 30213293 in words is "thirty million, two hundred thirteen thousand, two hundred ninety-three".