12531203012 has 6 divisors (see below), whose sum is σ = 21929605278. Its totient is φ = 6265601504.

The previous prime is 12531203011. The next prime is 12531203071. The reversal of 12531203012 is 21030213521.

It can be written as a sum of positive squares in only one way, i.e., 11788313476 + 742889536 = 108574^2 + 27256^2 .

It is not an unprimeable number, because it can be changed into a prime (12531203011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1566400373 + ... + 1566400380.

It is an arithmetic number, because the mean of its divisors is an integer number (3654934213).

Almost surely, 2^12531203012 is an apocalyptic number.

It is an amenable number.

12531203012 is a deficient number, since it is larger than the sum of its proper divisors (9398402266).

12531203012 is a wasteful number, since it uses less digits than its factorization.

12531203012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132800757 (or 3132800755 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 12531203012 its reverse (21030213521), we get a palindrome (33561416533).

The spelling of 12531203012 in words is "twelve billion, five hundred thirty-one million, two hundred three thousand, twelve".