1331131332 has 24 divisors (see below), whose sum is σ = 3158618400. Its totient is φ = 436189696.

The previous prime is 1331131327. The next prime is 1331131343. The reversal of 1331131332 is 2331311331.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1331131299 and 1331131308.

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, 939357 + ... + 940772.

It is an arithmetic number, because the mean of its divisors is an integer number (131609100).

Almost surely, 2^1331131332 is an apocalyptic number.

1331131332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331131332 is an abundant number, since it is smaller than the sum of its proper divisors (1827487068).

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

1331131332 is a wasteful number, since it uses less digits than its factorization.

1331131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880195 (or 1880193 counting only the distinct ones).

The product of its digits is 486, while the sum is 21.

The square root of 1331131332 is about 36484.6725625981. The cubic root of 1331131332 is about 1100.0361784244.

Adding to 1331131332 its reverse (2331311331), we get a palindrome (3662442663).

The spelling of 1331131332 in words is "one billion, three hundred thirty-one million, one hundred thirty-one thousand, three hundred thirty-two".