1312620216 has 32 divisors (see below), whose sum is σ = 3283584000. Its totient is φ = 437268960.

The previous prime is 1312620209. The next prime is 1312620223. The reversal of 1312620216 is 6120262131.

It is an interprime number because it is at equal distance from previous prime (1312620209) and next prime (1312620223).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24681 + ... + 56871.

It is an arithmetic number, because the mean of its divisors is an integer number (102612000).

Almost surely, 2^1312620216 is an apocalyptic number.

It is an amenable number.

1312620216 is an abundant number, since it is smaller than the sum of its proper divisors (1970963784).

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

1312620216 is a wasteful number, since it uses less digits than its factorization.

1312620216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33899 (or 33895 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1312620216 is about 36230.1009659095. The cubic root of 1312620216 is about 1094.9132117783.

Adding to 1312620216 its reverse (6120262131), we get a palindrome (7432882347).

The spelling of 1312620216 in words is "one billion, three hundred twelve million, six hundred twenty thousand, two hundred sixteen".