20103011231 has 8 divisors (see below), whose sum is σ = 20271319728. Its totient is φ = 19934928000.

The previous prime is 20103011209. The next prime is 20103011251. The reversal of 20103011231 is 13211030102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20103011231 is a prime.

It is a super-2 number, since 2×20103011231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103011251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125351 + ... + 236471.

It is an arithmetic number, because the mean of its divisors is an integer number (2533914966).

Almost surely, 2^20103011231 is an apocalyptic number.

20103011231 is a deficient number, since it is larger than the sum of its proper divisors (168308497).

20103011231 is a wasteful number, since it uses less digits than its factorization.

20103011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112633.

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

Adding to 20103011231 its reverse (13211030102), we get a palindrome (33314041333).

The spelling of 20103011231 in words is "twenty billion, one hundred three million, eleven thousand, two hundred thirty-one".