20123010243 has 24 divisors (see below), whose sum is σ = 33325783296. Its totient is φ = 11461878000.

The previous prime is 20123010241. The next prime is 20123010251. The reversal of 20123010243 is 34201032102.

It is not a de Polignac number, because 20123010243 - 2¹ = 20123010241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20123010241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 493933 + ... + 533118.

It is an arithmetic number, because the mean of its divisors is an integer number (1388574304).

Almost surely, 2^20123010243 is an apocalyptic number.

20123010243 is a deficient number, since it is larger than the sum of its proper divisors (13202773053).

20123010243 is a wasteful number, since it uses less digits than its factorization.

20123010243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027375 (or 1027372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20123010243 its reverse (34201032102), we get a palindrome (54324042345).

The spelling of 20123010243 in words is "twenty billion, one hundred twenty-three million, ten thousand, two hundred forty-three".