12320203531 has 8 divisors (see below), whose sum is σ = 12542448240. Its totient is φ = 12098406528.

The previous prime is 12320203507. The next prime is 12320203537. The reversal of 12320203531 is 13530202321.

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

It is a cyclic number.

It is not a de Polignac number, because 12320203531 - 2⁵ = 12320203499 is a prime.

It is a super-2 number, since 2×12320203531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12320203537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56146 + ... + 166711.

It is an arithmetic number, because the mean of its divisors is an integer number (1567806030).

Almost surely, 2^12320203531 is an apocalyptic number.

12320203531 is a deficient number, since it is larger than the sum of its proper divisors (222244709).

12320203531 is an equidigital number, since it uses as much as digits as its factorization.

12320203531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223853.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 12320203531 its reverse (13530202321), we get a palindrome (25850405852).

The spelling of 12320203531 in words is "twelve billion, three hundred twenty million, two hundred three thousand, five hundred thirty-one".