1330220431 has 4 divisors (see below), whose sum is σ = 1352766600. Its totient is φ = 1307674264.

The previous prime is 1330220389. The next prime is 1330220449. The reversal of 1330220431 is 1340220331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1340220331 = 751 ⋅1784581.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1330220431 is a prime.

It is a super-2 number, since 2×1330220431² = 3538972790099651522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1330220399 and 1330220408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330220491) 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 3 ways as a sum of consecutive naturals, for example, 11272996 + ... + 11273113.

It is an arithmetic number, because the mean of its divisors is an integer number (338191650).

Almost surely, 2^1330220431 is an apocalyptic number.

1330220431 is a deficient number, since it is larger than the sum of its proper divisors (22546169).

1330220431 is an equidigital number, since it uses as much as digits as its factorization.

1330220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22546168.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1330220431 is about 36472.1870882458. The cubic root of 1330220431 is about 1099.7852007582.

Adding to 1330220431 its reverse (1340220331), we get a palindrome (2670440762).

It can be divided in two parts, 13302 and 20431, that added together give a palindrome (33733).

The spelling of 1330220431 in words is "one billion, three hundred thirty million, two hundred twenty thousand, four hundred thirty-one".