30231213 has 4 divisors (see below), whose sum is σ = 40308288. Its totient is φ = 20154140.

The previous prime is 30231209. The next prime is 30231239. The reversal of 30231213 is 31213203.

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.

It is a cyclic number.

It is not a de Polignac number, because 30231213 - 2² = 30231209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30231192 and 30231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231203) 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, 5038533 + ... + 5038538.

It is an arithmetic number, because the mean of its divisors is an integer number (10077072).

Almost surely, 2^30231213 is an apocalyptic number.

It is an amenable number.

30231213 is a deficient number, since it is larger than the sum of its proper divisors (10077075).

30231213 is a wasteful number, since it uses less digits than its factorization.

30231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10077074.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 30231213 is about 5498.2918256491. The cubic root of 30231213 is about 311.5194669671.

Adding to 30231213 its reverse (31213203), we get a palindrome (61444416).

The spelling of 30231213 in words is "thirty million, two hundred thirty-one thousand, two hundred thirteen".