2103523031 has 4 divisors (see below), whose sum is σ = 2103614832. Its totient is φ = 2103431232.

The previous prime is 2103523027. The next prime is 2103523039. The reversal of 2103523031 is 1303253012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2103523031 - 2² = 2103523027 is a prime.

It is a super-2 number, since 2×2103523031² = 8849618283894853922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103522994 and 2103523012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103523039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20231 + ... + 67943.

It is an arithmetic number, because the mean of its divisors is an integer number (525903708).

Almost surely, 2^2103523031 is an apocalyptic number.

2103523031 is a deficient number, since it is larger than the sum of its proper divisors (91801).

2103523031 is an equidigital number, since it uses as much as digits as its factorization.

2103523031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91800.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 2103523031 is about 45864.1802608528. The cubic root of 2103523031 is about 1281.2948792021.

Adding to 2103523031 its reverse (1303253012), we get a palindrome (3406776043).

The spelling of 2103523031 in words is "two billion, one hundred three million, five hundred twenty-three thousand, thirty-one".