1312903680 has 160 divisors (see below), whose sum is σ = 4579046208. Its totient is φ = 318259200.

The previous prime is 1312903663. The next prime is 1312903729. The reversal of 1312903680 is 863092131.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 76710 + ... + 92250.

Almost surely, 2^1312903680 is an apocalyptic number.

1312903680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312903680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2289523104).

1312903680 is an abundant number, since it is smaller than the sum of its proper divisors (3266142528).

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

1312903680 is a wasteful number, since it uses less digits than its factorization.

1312903680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15578 (or 15562 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1312903680 is about 36234.0127504531. The cubic root of 1312903680 is about 1094.9920226270.

The spelling of 1312903680 in words is "one billion, three hundred twelve million, nine hundred three thousand, six hundred eighty".