20103231011 has 12 divisors (see below), whose sum is σ = 20477829624. Its totient is φ = 19735358400.

The previous prime is 20103230999. The next prime is 20103231023. The reversal of 20103231011 is 11013230102.

It is an interprime number because it is at equal distance from previous prime (20103230999) and next prime (20103231023).

It is not a de Polignac number, because 20103231011 - 2⁶ = 20103230947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003231011) 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, 2819531 + ... + 2826651.

It is an arithmetic number, because the mean of its divisors is an integer number (1706485802).

Almost surely, 2^20103231011 is an apocalyptic number.

20103231011 is a deficient number, since it is larger than the sum of its proper divisors (374598613).

20103231011 is an frugal number, since it uses more digits than its factorization.

20103231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050 (or 7991 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20103231011 its reverse (11013230102), we get a palindrome (31116461113).

Subtracting from 20103231011 its reverse (11013230102), we obtain a palindrome (9090000909).

The spelling of 20103231011 in words is "twenty billion, one hundred three million, two hundred thirty-one thousand, eleven".