1322531 has 4 divisors (see below), whose sum is σ = 1511472. Its totient is φ = 1133592.

The previous prime is 1322527. The next prime is 1322543. The reversal of 1322531 is 1352231.

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 1322531 - 2² = 1322527 is a prime.

It is a super-2 number, since 2×1322531² = 3498176491922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322501) 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, 94460 + ... + 94473.

It is an arithmetic number, because the mean of its divisors is an integer number (377868).

2^1322531 is an apocalyptic number.

1322531 is a deficient number, since it is larger than the sum of its proper divisors (188941).

1322531 is an equidigital number, since it uses as much as digits as its factorization.

1322531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188940.

The product of its digits is 180, while the sum is 17.

The square root of 1322531 is about 1150.0134781819. The cubic root of 1322531 is about 109.7661976256.

Adding to 1322531 its reverse (1352231), we get a palindrome (2674762).

The spelling of 1322531 in words is "one million, three hundred twenty-two thousand, five hundred thirty-one".