1320561232 has 10 divisors (see below), whose sum is σ = 2558587418. Its totient is φ = 660280608.

The previous prime is 1320561227. The next prime is 1320561233. The reversal of 1320561232 is 2321650231.

It can be written as a sum of positive squares in only one way, i.e., 719526976 + 601034256 = 26824^2 + 24516^2 .

It is a super-2 number, since 2×1320561232² = 3487763934922715648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320561197 and 1320561206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320561233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41267523 + ... + 41267554.

Almost surely, 2^1320561232 is an apocalyptic number.

It is an amenable number.

1320561232 is a deficient number, since it is larger than the sum of its proper divisors (1238026186).

1320561232 is an equidigital number, since it uses as much as digits as its factorization.

1320561232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82535085 (or 82535079 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1320561232 is about 36339.5271295596. The cubic root of 1320561232 is about 1097.1167555768.

The spelling of 1320561232 in words is "one billion, three hundred twenty million, five hundred sixty-one thousand, two hundred thirty-two".