1331121232 has 40 divisors (see below), whose sum is σ = 2950654400. Its totient is φ = 569866752.

The previous prime is 1331121223. The next prime is 1331121271. The reversal of 1331121232 is 2321211331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107119 + ... + 118897.

It is an arithmetic number, because the mean of its divisors is an integer number (73766360).

Almost surely, 2^1331121232 is an apocalyptic number.

It is an amenable number.

1331121232 is an abundant number, since it is smaller than the sum of its proper divisors (1619533168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331121232 is a wasteful number, since it uses less digits than its factorization.

1331121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12803 (or 12797 counting only the distinct ones).

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

The square root of 1331121232 is about 36484.5341480469. The cubic root of 1331121232 is about 1100.0333962313.

Adding to 1331121232 its reverse (2321211331), we get a palindrome (3652332563).

Subtracting 1331121232 from its reverse (2321211331), we obtain a palindrome (990090099).

It can be divided in two parts, 13311 and 21232, that added together give a palindrome (34543).

The spelling of 1331121232 in words is "one billion, three hundred thirty-one million, one hundred twenty-one thousand, two hundred thirty-two".