2103545231 has 4 divisors (see below), whose sum is σ = 2139198600. Its totient is φ = 2067891864.

The previous prime is 2103545219. The next prime is 2103545237. The reversal of 2103545231 is 1325453012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2103545231 is a prime.

It is a super-2 number, since 2×2103545231² = 8849805077725686722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103545231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103545237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17826596 + ... + 17826713.

It is an arithmetic number, because the mean of its divisors is an integer number (534799650).

Almost surely, 2^2103545231 is an apocalyptic number.

2103545231 is a deficient number, since it is larger than the sum of its proper divisors (35653369).

2103545231 is an equidigital number, since it uses as much as digits as its factorization.

2103545231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35653368.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2103545231 is about 45864.4222791479. The cubic root of 2103545231 is about 1281.2993866635.

Adding to 2103545231 its reverse (1325453012), we get a palindrome (3428998243).

It can be divided in two parts, 21035 and 45231, that added together give a palindrome (66266).

The spelling of 2103545231 in words is "two billion, one hundred three million, five hundred forty-five thousand, two hundred thirty-one".