20030011243 has 12 divisors (see below), whose sum is σ = 22234456944. Its totient is φ = 18028802000.

The previous prime is 20030011241. The next prime is 20030011249. The reversal of 20030011243 is 34211003002.

It is a happy number.

It is not a de Polignac number, because 20030011243 - 2¹ = 20030011241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20030011241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 807271 + ... + 831712.

It is an arithmetic number, because the mean of its divisors is an integer number (1852871412).

Almost surely, 2^20030011243 is an apocalyptic number.

20030011243 is a deficient number, since it is larger than the sum of its proper divisors (2204445701).

20030011243 is a wasteful number, since it uses less digits than its factorization.

20030011243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639106 (or 1639095 counting only the distinct ones).

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

Adding to 20030011243 its reverse (34211003002), we get a palindrome (54241014245).

The spelling of 20030011243 in words is "twenty billion, thirty million, eleven thousand, two hundred forty-three".