20203101123 has 32 divisors (see below), whose sum is σ = 28784616960. Its totient is φ = 12573792000.

The previous prime is 20203101043. The next prime is 20203101143. The reversal of 20203101123 is 32110130202.

It is not a de Polignac number, because 20203101123 - 2²⁴ = 20186323907 is a prime.

It is a super-2 number, since 2×20203101123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20203101143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6730623 + ... + 6733623.

It is an arithmetic number, because the mean of its divisors is an integer number (899519280).

Almost surely, 2^20203101123 is an apocalyptic number.

20203101123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20203101123 is a deficient number, since it is larger than the sum of its proper divisors (8581515837).

20203101123 is a wasteful number, since it uses less digits than its factorization.

20203101123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20203101123 its reverse (32110130202), we get a palindrome (52313231325).

The spelling of 20203101123 in words is "twenty billion, two hundred three million, one hundred one thousand, one hundred twenty-three".