30231131223 has 4 divisors (see below), whose sum is σ = 40308174968. Its totient is φ = 20154087480.

The previous prime is 30231131219. The next prime is 30231131261. The reversal of 30231131223 is 32213113203.

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

It is not a de Polignac number, because 30231131223 - 2² = 30231131219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30231131223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231131923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5038521868 + ... + 5038521873.

It is an arithmetic number, because the mean of its divisors is an integer number (10077043742).

Almost surely, 2^30231131223 is an apocalyptic number.

30231131223 is a deficient number, since it is larger than the sum of its proper divisors (10077043745).

30231131223 is a wasteful number, since it uses less digits than its factorization.

30231131223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10077043744.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30231131223 its reverse (32213113203), we get a palindrome (62444244426).

The spelling of 30231131223 in words is "thirty billion, two hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty-three".