30220231 has 4 divisors (see below), whose sum is σ = 31037032. Its totient is φ = 29403432.

The previous prime is 30220219. The next prime is 30220273. The reversal of 30220231 is 13202203.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13202203 = 7 ⋅1886029.

It is a cyclic number.

It is not a de Polignac number, because 30220231 - 2⁷ = 30220103 is a prime.

It is a super-2 number, since 2×30220231² = 1826524723386722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30227231) 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, 408345 + ... + 408418.

It is an arithmetic number, because the mean of its divisors is an integer number (7759258).

Almost surely, 2^30220231 is an apocalyptic number.

30220231 is a deficient number, since it is larger than the sum of its proper divisors (816801).

30220231 is an equidigital number, since it uses as much as digits as its factorization.

30220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816800.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30220231 is about 5497.2930611347. The cubic root of 30220231 is about 311.4817408248.

Adding to 30220231 its reverse (13202203), we get a palindrome (43422434).

The spelling of 30220231 in words is "thirty million, two hundred twenty thousand, two hundred thirty-one".