1320730310 has 16 divisors (see below), whose sum is σ = 2378613600. Its totient is φ = 528003456.

The previous prime is 1320730309. The next prime is 1320730343. The reversal of 1320730310 is 130370231.

It is a happy number.

It is a super-2 number, since 2×1320730310² = 3488657103505392200, which contains 22 as substring.

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, 16355 + ... + 53934.

It is an arithmetic number, because the mean of its divisors is an integer number (148663350).

Almost surely, 2^1320730310 is an apocalyptic number.

1320730310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320730310 is a deficient number, since it is larger than the sum of its proper divisors (1057883290).

1320730310 is a wasteful number, since it uses less digits than its factorization.

1320730310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72175.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 1320730310 is about 36341.8534199895. The cubic root of 1320730310 is about 1097.1635766774.

The spelling of 1320730310 in words is "one billion, three hundred twenty million, seven hundred thirty thousand, three hundred ten".