1313147128 has 8 divisors (see below), whose sum is σ = 2462150880. Its totient is φ = 656573560.

The previous prime is 1313147111. The next prime is 1313147159. The reversal of 1313147128 is 8217413131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1313147128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82071688 + ... + 82071703.

It is an arithmetic number, because the mean of its divisors is an integer number (307768860).

Almost surely, 2^1313147128 is an apocalyptic number.

It is an amenable number.

1313147128 is a deficient number, since it is larger than the sum of its proper divisors (1149003752).

1313147128 is a wasteful number, since it uses less digits than its factorization.

1313147128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164143397 (or 164143393 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 1313147128 is about 36237.3719797670. The cubic root of 1313147128 is about 1095.0596988643.

The spelling of 1313147128 in words is "one billion, three hundred thirteen million, one hundred forty-seven thousand, one hundred twenty-eight".