1321113530 has 32 divisors (see below), whose sum is σ = 2602542528. Its totient is φ = 478857600.

The previous prime is 1321113523. The next prime is 1321113557. The reversal of 1321113530 is 353111231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15245 + ... + 53615.

It is an arithmetic number, because the mean of its divisors is an integer number (81329454).

Almost surely, 2^1321113530 is an apocalyptic number.

1321113530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321113530 is a deficient number, since it is larger than the sum of its proper divisors (1281428998).

1321113530 is a wasteful number, since it uses less digits than its factorization.

1321113530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38702.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1321113530 is about 36347.1254709365. The cubic root of 1321113530 is about 1097.2696832164.

Adding to 1321113530 its reverse (353111231), we get a palindrome (1674224761).

The spelling of 1321113530 in words is "one billion, three hundred twenty-one million, one hundred thirteen thousand, five hundred thirty".