1331323012 has 6 divisors (see below), whose sum is σ = 2329815278. Its totient is φ = 665661504.

The previous prime is 1331322991. The next prime is 1331323033. The reversal of 1331323012 is 2103231331.

It is an interprime number because it is at equal distance from previous prime (1331322991) and next prime (1331323033).

It can be written as a sum of positive squares in only one way, i.e., 1110622276 + 220700736 = 33326^2 + 14856^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166415373 + ... + 166415380.

Almost surely, 2^1331323012 is an apocalyptic number.

It is an amenable number.

1331323012 is a deficient number, since it is larger than the sum of its proper divisors (998492266).

1331323012 is a wasteful number, since it uses less digits than its factorization.

1331323012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332830757 (or 332830755 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1331323012 is about 36487.2993245595. The cubic root of 1331323012 is about 1100.0889768247.

Adding to 1331323012 its reverse (2103231331), we get a palindrome (3434554343).

The spelling of 1331323012 in words is "one billion, three hundred thirty-one million, three hundred twenty-three thousand, twelve".