30331143023 has 4 divisors (see below), whose sum is σ = 30474892728. Its totient is φ = 30187393320.

The previous prime is 30331142999. The next prime is 30331143061. The reversal of 30331143023 is 32034113303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32034113303 = 7481 ⋅4282063.

It is a cyclic number.

It is not a de Polignac number, because 30331143023 - 2²⁰ = 30330094447 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 30331143023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30331143083) 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, 71874536 + ... + 71874957.

It is an arithmetic number, because the mean of its divisors is an integer number (7618723182).

Almost surely, 2^30331143023 is an apocalyptic number.

30331143023 is a deficient number, since it is larger than the sum of its proper divisors (143749705).

30331143023 is a wasteful number, since it uses less digits than its factorization.

30331143023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143749704.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 30331143023 its reverse (32034113303), we get a palindrome (62365256326).

The spelling of 30331143023 in words is "thirty billion, three hundred thirty-one million, one hundred forty-three thousand, twenty-three".