1310784580781 has 16 divisors (see below), whose sum is σ = 1473057917184. Its totient is φ = 1157293868544.

The previous prime is 1310784580771. The next prime is 1310784580843. The reversal of 1310784580781 is 1870854870131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310784580781 is a prime.

It is a super-2 number, since 2×1310784580781² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310784580711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7114040 + ... + 7295966.

It is an arithmetic number, because the mean of its divisors is an integer number (92066119824).

Almost surely, 2^{1310784580781} is an apocalyptic number.

It is an amenable number.

1310784580781 is a deficient number, since it is larger than the sum of its proper divisors (162273336403).

1310784580781 is a wasteful number, since it uses less digits than its factorization.

1310784580781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206060.

The product of its (nonzero) digits is 1505280, while the sum is 53.

The spelling of 1310784580781 in words is "one trillion, three hundred ten billion, seven hundred eighty-four million, five hundred eighty thousand, seven hundred eighty-one".