1301523 has 8 divisors (see below), whose sum is σ = 1756608. Its totient is φ = 857064.

The previous prime is 1301507. The next prime is 1301527. The reversal of 1301523 is 3251031.

It is a happy number.

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

It is not a de Polignac number, because 1301523 - 2⁴ = 1301507 is a prime.

1301523 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1301527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365 + ... + 2862.

It is an arithmetic number, because the mean of its divisors is an integer number (219576).

2^1301523 is an apocalyptic number.

1301523 is a deficient number, since it is larger than the sum of its proper divisors (455085).

1301523 is an equidigital number, since it uses as much as digits as its factorization.

1301523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1301523 is about 1140.8431092837. The cubic root of 1301523 is about 109.1818919645.

Adding to 1301523 its reverse (3251031), we get a palindrome (4552554).

It can be divided in two parts, 130 and 1523, that added together give a triangular number (1653 = T₅₇).

The spelling of 1301523 in words is "one million, three hundred one thousand, five hundred twenty-three".