30120202231 has 4 divisors (see below), whose sum is σ = 34423088272. Its totient is φ = 25817316192.

The previous prime is 30120202223. The next prime is 30120202247. The reversal of 30120202231 is 13220202103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30120202231 - 2³ = 30120202223 is a prime.

It is a super-2 number, since 2×30120202231² (a number of 22 digits) 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 (30120202261) 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, 2151443010 + ... + 2151443023.

It is an arithmetic number, because the mean of its divisors is an integer number (8605772068).

Almost surely, 2^30120202231 is an apocalyptic number.

30120202231 is a deficient number, since it is larger than the sum of its proper divisors (4302886041).

30120202231 is an equidigital number, since it uses as much as digits as its factorization.

30120202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302886040.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30120202231 its reverse (13220202103), we get a palindrome (43340404334).

The spelling of 30120202231 in words is "thirty billion, one hundred twenty million, two hundred two thousand, two hundred thirty-one".