1312988455987 has 8 divisors (see below), whose sum is σ = 1414011441920. Its totient is φ = 1211968880640.

The previous prime is 1312988455973. The next prime is 1312988456083. The reversal of 1312988455987 is 7895548892131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312988455987 - 2¹¹ = 1312988453939 is a prime.

It is a super-4 number, since 4×1312988455987⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312988455907) 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, 23187 + ... + 1620652.

It is an arithmetic number, because the mean of its divisors is an integer number (176751430240).

Almost surely, 2^{1312988455987} is an apocalyptic number.

1312988455987 is a deficient number, since it is larger than the sum of its proper divisors (101022985933).

1312988455987 is a wasteful number, since it uses less digits than its factorization.

1312988455987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705293.

The product of its digits is 174182400, while the sum is 70.

The spelling of 1312988455987 in words is "one trillion, three hundred twelve billion, nine hundred eighty-eight million, four hundred fifty-five thousand, nine hundred eighty-seven".