1303542523 has 4 divisors (see below), whose sum is σ = 1338773440. Its totient is φ = 1268311608.

The previous prime is 1303542517. The next prime is 1303542563. The reversal of 1303542523 is 3252453031.

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 1303542523 - 2⁵ = 1303542491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303542491 and 1303542500.

It is not an unprimeable number, because it can be changed into a prime (1303542563) 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, 17615403 + ... + 17615476.

It is an arithmetic number, because the mean of its divisors is an integer number (334693360).

Almost surely, 2^1303542523 is an apocalyptic number.

1303542523 is a deficient number, since it is larger than the sum of its proper divisors (35230917).

1303542523 is an equidigital number, since it uses as much as digits as its factorization.

1303542523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35230916.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 1303542523 is about 36104.6052879685. The cubic root of 1303542523 is about 1092.3833389071.

Adding to 1303542523 its reverse (3252453031), we get a palindrome (4555995554).

The spelling of 1303542523 in words is "one billion, three hundred three million, five hundred forty-two thousand, five hundred twenty-three".