12531322 has 8 divisors (see below), whose sum is σ = 19255572. Its totient is φ = 6112800.

The previous prime is 12531313. The next prime is 12531331. The reversal of 12531322 is 22313521.

It is an interprime number because it is at equal distance from previous prime (12531313) and next prime (12531331).

It can be written as a sum of positive squares in 2 ways, for example, as 11553201 + 978121 = 3399^2 + 989^2 .

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

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 12531322.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76329 + ... + 76492.

Almost surely, 2^12531322 is an apocalyptic number.

12531322 is a deficient number, since it is larger than the sum of its proper divisors (6724250).

12531322 is a wasteful number, since it uses less digits than its factorization.

12531322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152864.

The product of its digits is 360, while the sum is 19.

The square root of 12531322 is about 3539.9607342455. The cubic root of 12531322 is about 232.2731251231.

Adding to 12531322 its reverse (22313521), we get a palindrome (34844843).

The spelling of 12531322 in words is "twelve million, five hundred thirty-one thousand, three hundred twenty-two".