1331302120 has 16 divisors (see below), whose sum is σ = 2995429860. Its totient is φ = 532520832.

The previous prime is 1331302117. The next prime is 1331302121. The reversal of 1331302120 is 212031331.

It can be written as a sum of positive squares in 2 ways, for example, as 1258404676 + 72897444 = 35474^2 + 8538^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1331302094 and 1331302103.

It is not an unprimeable number, because it can be changed into a prime (1331302121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16641237 + ... + 16641316.

Almost surely, 2^1331302120 is an apocalyptic number.

1331302120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331302120 is an abundant number, since it is smaller than the sum of its proper divisors (1664127740).

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

1331302120 is a wasteful number, since it uses less digits than its factorization.

1331302120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33282564 (or 33282560 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1331302120 is about 36487.0130320365. The cubic root of 1331302120 is about 1100.0832223537.

Adding to 1331302120 its reverse (212031331), we get a palindrome (1543333451).

The spelling of 1331302120 in words is "one billion, three hundred thirty-one million, three hundred two thousand, one hundred twenty".