1313704128 has 56 divisors (see below), whose sum is σ = 3791833920. Its totient is φ = 398091520.

The previous prime is 1313704123. The next prime is 1313704159. The reversal of 1313704128 is 8214073131.

It is a junction number, because it is equal to n+sod(n) for n = 1313704095 and 1313704104.

It is not an unprimeable number, because it can be changed into a prime (1313704123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308898 + ... + 313121.

It is an arithmetic number, because the mean of its divisors is an integer number (67711320).

Almost surely, 2^1313704128 is an apocalyptic number.

It is an amenable number.

1313704128 is an abundant number, since it is smaller than the sum of its proper divisors (2478129792).

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

1313704128 is a wasteful number, since it uses less digits than its factorization.

1313704128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622045 (or 622035 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1313704128 is about 36245.0566008663. The cubic root of 1313704128 is about 1095.2145081309.

Adding to 1313704128 its reverse (8214073131), we get a palindrome (9527777259).

The spelling of 1313704128 in words is "one billion, three hundred thirteen million, seven hundred four thousand, one hundred twenty-eight".