1300531 has 4 divisors (see below), whose sum is σ = 1369000. Its totient is φ = 1232064.

The previous prime is 1300511. The next prime is 1300553. The reversal of 1300531 is 1350031.

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 1300531 - 2¹³ = 1292339 is a prime.

It is a super-2 number, since 2×1300531² = 3382761763922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1300501) 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 3 ways as a sum of consecutive naturals, for example, 34206 + ... + 34243.

It is an arithmetic number, because the mean of its divisors is an integer number (342250).

2^1300531 is an apocalyptic number.

1300531 is a deficient number, since it is larger than the sum of its proper divisors (68469).

1300531 is an equidigital number, since it uses as much as digits as its factorization.

1300531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68468.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 1300531 is about 1140.4082602296. The cubic root of 1300531 is about 109.1541460172.

Adding to 1300531 its reverse (1350031), we get a palindrome (2650562).

The spelling of 1300531 in words is "one million, three hundred thousand, five hundred thirty-one".