1056311519 has 4 divisors (see below), whose sum is σ = 1056452544. Its totient is φ = 1056170496.

The previous prime is 1056311491. The next prime is 1056311537. The reversal of 1056311519 is 9151136501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1056311519 is a prime.

It is a super-2 number, since 2×1056311519² = 2231588050344174722, which 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 (1056311539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58607 + ... + 74480.

It is an arithmetic number, because the mean of its divisors is an integer number (264113136).

Almost surely, 2^1056311519 is an apocalyptic number.

1056311519 is a deficient number, since it is larger than the sum of its proper divisors (141025).

1056311519 is an equidigital number, since it uses as much as digits as its factorization.

1056311519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141024.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 1056311519 is about 32500.9464323733. The cubic root of 1056311519 is about 1018.4287994184.

The spelling of 1056311519 in words is "one billion, fifty-six million, three hundred eleven thousand, five hundred nineteen".