1056305731723 has 8 divisors (see below), whose sum is σ = 1166217062976. Its totient is φ = 948708323400.

The previous prime is 1056305731721. The next prime is 1056305731727. The reversal of 1056305731723 is 3271375036501.

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 1056305731723 - 2¹ = 1056305731721 is a prime.

It is a super-2 number, since 2×1056305731723² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1056305731723.

It is not an unprimeable number, because it can be changed into a prime (1056305731721) 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, 578479773 + ... + 578481598.

It is an arithmetic number, because the mean of its divisors is an integer number (145777132872).

Almost surely, 2^{1056305731723} is an apocalyptic number.

1056305731723 is a deficient number, since it is larger than the sum of its proper divisors (109911331253).

1056305731723 is a wasteful number, since it uses less digits than its factorization.

1056305731723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156961465.

The product of its (nonzero) digits is 396900, while the sum is 43.

The spelling of 1056305731723 in words is "one trillion, fifty-six billion, three hundred five million, seven hundred thirty-one thousand, seven hundred twenty-three".