1303423523 has 4 divisors (see below), whose sum is σ = 1303793520. Its totient is φ = 1303053528.

The previous prime is 1303423493. The next prime is 1303423543. The reversal of 1303423523 is 3253243031.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1303423523 - 2¹⁰ = 1303422499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303423492 and 1303423501.

It is not an unprimeable number, because it can be changed into a prime (1303423543) 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, 179663 + ... + 186776.

It is an arithmetic number, because the mean of its divisors is an integer number (325948380).

Almost surely, 2^1303423523 is an apocalyptic number.

1303423523 is a deficient number, since it is larger than the sum of its proper divisors (369997).

1303423523 is an equidigital number, since it uses as much as digits as its factorization.

1303423523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369996.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 1303423523 is about 36102.9572611441. The cubic root of 1303423523 is about 1092.3500967814.

Adding to 1303423523 its reverse (3253243031), we get a palindrome (4556666554).

The spelling of 1303423523 in words is "one billion, three hundred three million, four hundred twenty-three thousand, five hundred twenty-three".