1213302320 has 40 divisors (see below), whose sum is σ = 2823911520. Its totient is φ = 484807680.

The previous prime is 1213302289. The next prime is 1213302347. The reversal of 1213302320 is 232033121.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73205 + ... + 88235.

It is an arithmetic number, because the mean of its divisors is an integer number (70597788).

Almost surely, 2^1213302320 is an apocalyptic number.

1213302320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213302320 is an abundant number, since it is smaller than the sum of its proper divisors (1610609200).

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

1213302320 is a wasteful number, since it uses less digits than its factorization.

1213302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16053 (or 16047 counting only the distinct ones).

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

The square root of 1213302320 is about 34832.4894315637. The cubic root of 1213302320 is about 1066.5707665518.

Adding to 1213302320 its reverse (232033121), we get a palindrome (1445335441).

The spelling of 1213302320 in words is "one billion, two hundred thirteen million, three hundred two thousand, three hundred twenty".