1310403320 has 32 divisors (see below), whose sum is σ = 2975972400. Its totient is φ = 519260928.

The previous prime is 1310403319. The next prime is 1310403329. The reversal of 1310403320 is 233040131.

It is a happy number.

It is a super-2 number, since 2×1310403320² = 3434313722134044800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310403329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148805 + ... + 157364.

Almost surely, 2^1310403320 is an apocalyptic number.

1310403320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310403320 is an abundant number, since it is smaller than the sum of its proper divisors (1665569080).

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

1310403320 is a wasteful number, since it uses less digits than its factorization.

1310403320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306287 (or 306283 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1310403320 is about 36199.4933666205. The cubic root of 1310403320 is about 1094.2964615371.

Adding to 1310403320 its reverse (233040131), we get a palindrome (1543443451).

The spelling of 1310403320 in words is "one billion, three hundred ten million, four hundred three thousand, three hundred twenty".