1313221330 has 16 divisors (see below), whose sum is σ = 2379455424. Its totient is φ = 521809200.

The previous prime is 1313221303. The next prime is 1313221337. The reversal of 1313221330 is 331223131.

1313221330 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1313221298 and 1313221307.

It is not an unprimeable number, because it can be changed into a prime (1313221337) 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, 433332 + ... + 436351.

It is an arithmetic number, because the mean of its divisors is an integer number (148715964).

Almost surely, 2^1313221330 is an apocalyptic number.

1313221330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313221330 is a deficient number, since it is larger than the sum of its proper divisors (1066234094).

1313221330 is a wasteful number, since it uses less digits than its factorization.

1313221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869841.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1313221330 is about 36238.3957978275. The cubic root of 1313221330 is about 1095.0803246539.

Adding to 1313221330 its reverse (331223131), we get a palindrome (1644444461).

The spelling of 1313221330 in words is "one billion, three hundred thirteen million, two hundred twenty-one thousand, three hundred thirty".