1310121330 has 48 divisors (see below), whose sum is σ = 3657648960. Its totient is φ = 299455968.

The previous prime is 1310121289. The next prime is 1310121343. The reversal of 1310121330 is 331210131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 444150 + ... + 447089.

It is an arithmetic number, because the mean of its divisors is an integer number (76201020).

Almost surely, 2^1310121330 is an apocalyptic number.

1310121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1310121330 is an abundant number, since it is smaller than the sum of its proper divisors (2347527630).

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

1310121330 is a wasteful number, since it uses less digits than its factorization.

1310121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891263 (or 891256 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1310121330 is about 36195.5982130424. The cubic root of 1310121330 is about 1094.2179608211.

Adding to 1310121330 its reverse (331210131), we get a palindrome (1641331461).

The spelling of 1310121330 in words is "one billion, three hundred ten million, one hundred twenty-one thousand, three hundred thirty".