1056006331 has 4 divisors (see below), whose sum is σ = 1056294000. Its totient is φ = 1055718664.

The previous prime is 1056006317. The next prime is 1056006349. The reversal of 1056006331 is 1336006501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1336006501 = 89 ⋅15011309.

It is a cyclic number.

It is not a de Polignac number, because 1056006331 - 2¹⁷ = 1055875259 is a prime.

It is a super-2 number, since 2×1056006331² = 2230298742224163122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1056006296 and 1056006305.

It is not an unprimeable number, because it can be changed into a prime (1056006431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138256 + ... + 145693.

It is an arithmetic number, because the mean of its divisors is an integer number (264073500).

Almost surely, 2^1056006331 is an apocalyptic number.

1056006331 is a deficient number, since it is larger than the sum of its proper divisors (287669).

1056006331 is an equidigital number, since it uses as much as digits as its factorization.

1056006331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287668.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1056006331 is about 32496.2510299265. The cubic root of 1056006331 is about 1018.3307089780.

The spelling of 1056006331 in words is "one billion, fifty-six million, six thousand, three hundred thirty-one".