30220313231 has 4 divisors (see below), whose sum is σ = 30715728264. Its totient is φ = 29724898200.

The previous prime is 30220313173. The next prime is 30220313239. The reversal of 30220313231 is 13231302203.

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 30220313231 - 2¹⁸ = 30220051087 is a prime.

It is a super-2 number, since 2×30220313231² (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 (30220313239) 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, 247707425 + ... + 247707546.

It is an arithmetic number, because the mean of its divisors is an integer number (7678932066).

Almost surely, 2^30220313231 is an apocalyptic number.

30220313231 is a deficient number, since it is larger than the sum of its proper divisors (495415033).

30220313231 is an equidigital number, since it uses as much as digits as its factorization.

30220313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495415032.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30220313231 its reverse (13231302203), we get a palindrome (43451615434).

The spelling of 30220313231 in words is "thirty billion, two hundred twenty million, three hundred thirteen thousand, two hundred thirty-one".