1331002012 has 12 divisors (see below), whose sum is σ = 2466268560. Its totient is φ = 626353856.

The previous prime is 1331001953. The next prime is 1331002021. The reversal of 1331002012 is 2102001331.

It is a junction number, because it is equal to n+sod(n) for n = 1331001983 and 1331002001.

It is a congruent number.

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, 9786712 + ... + 9786847.

It is an arithmetic number, because the mean of its divisors is an integer number (205522380).

Almost surely, 2^1331002012 is an apocalyptic number.

It is an amenable number.

1331002012 is a deficient number, since it is larger than the sum of its proper divisors (1135266548).

1331002012 is a wasteful number, since it uses less digits than its factorization.

1331002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573580 (or 19573578 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1331002012 is about 36482.9002684819. The cubic root of 1331002012 is about 1100.0005542697. Note that the first 3 decimals are identical.

Adding to 1331002012 its reverse (2102001331), we get a palindrome (3433003343).

The spelling of 1331002012 in words is "one billion, three hundred thirty-one million, two thousand, twelve".