1331212132 has 24 divisors (see below), whose sum is σ = 2471568120. Its totient is φ = 625205760.

The previous prime is 1331212121. The next prime is 1331212139. The reversal of 1331212132 is 2312121331.

It can be written as a sum of positive squares in 4 ways, for example, as 341732196 + 989479936 = 18486^2 + 31456^2 .

It is not an unprimeable number, because it can be changed into a prime (1331212139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15382 + ... + 53842.

It is an arithmetic number, because the mean of its divisors is an integer number (102982005).

Almost surely, 2^1331212132 is an apocalyptic number.

It is an amenable number.

1331212132 is a deficient number, since it is larger than the sum of its proper divisors (1140355988).

1331212132 is a wasteful number, since it uses less digits than its factorization.

1331212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38991 (or 38989 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1331212132 is about 36485.7798601044. The cubic root of 1331212132 is about 1100.0584354632.

Adding to 1331212132 its reverse (2312121331), we get a palindrome (3643333463).

It can be divided in two parts, 1 and 331212132, that added together give a palindrome (331212133).

The spelling of 1331212132 in words is "one billion, three hundred thirty-one million, two hundred twelve thousand, one hundred thirty-two".