1311320330 has 64 divisors (see below), whose sum is σ = 2584535040. Its totient is φ = 477010944.

The previous prime is 1311320327. The next prime is 1311320341. The reversal of 1311320330 is 330231131.

It is a super-2 number, since 2×1311320330² = 3439122015742617800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 1311320299 and 1311320308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1024631 + ... + 1025909.

It is an arithmetic number, because the mean of its divisors is an integer number (40383360).

Almost surely, 2^1311320330 is an apocalyptic number.

1311320330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311320330 is a deficient number, since it is larger than the sum of its proper divisors (1273214710).

1311320330 is a wasteful number, since it uses less digits than its factorization.

1311320330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1311320330 is about 36212.1572127373. The cubic root of 1311320330 is about 1094.5516620539.

Adding to 1311320330 its reverse (330231131), we get a palindrome (1641551461).

The spelling of 1311320330 in words is "one billion, three hundred eleven million, three hundred twenty thousand, three hundred thirty".