20110231203 has 16 divisors (see below), whose sum is σ = 27348523776. Its totient is φ = 13141563680.

The previous prime is 20110231151. The next prime is 20110231259. The reversal of 20110231203 is 30213201102.

It is a cyclic number.

It is not a de Polignac number, because 20110231203 - 2⁸ = 20110230947 is a prime.

It is a super-2 number, since 2×20110231203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20110231903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236025 + ... + 309722.

It is an arithmetic number, because the mean of its divisors is an integer number (1709282736).

Almost surely, 2^20110231203 is an apocalyptic number.

20110231203 is a deficient number, since it is larger than the sum of its proper divisors (7238292573).

20110231203 is a wasteful number, since it uses less digits than its factorization.

20110231203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545994.

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

Adding to 20110231203 its reverse (30213201102), we get a palindrome (50323432305).

The spelling of 20110231203 in words is "twenty billion, one hundred ten million, two hundred thirty-one thousand, two hundred three".