1056326213 has 4 divisors (see below), whose sum is σ = 1057051680. Its totient is φ = 1055600748.

The previous prime is 1056326207. The next prime is 1056326231. The reversal of 1056326213 is 3126236501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3126236501 = 401 ⋅7796101.

It is a cyclic number.

It is not a de Polignac number, because 1056326213 - 2⁴ = 1056326197 is a prime.

It is a super-2 number, since 2×1056326213² = 2231650136541842738, 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 (1056326233) 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, 360545 + ... + 363462.

It is an arithmetic number, because the mean of its divisors is an integer number (264262920).

Almost surely, 2^1056326213 is an apocalyptic number.

It is an amenable number.

1056326213 is a deficient number, since it is larger than the sum of its proper divisors (725467).

1056326213 is an equidigital number, since it uses as much as digits as its factorization.

1056326213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725466.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1056326213 is about 32501.1724865427. The cubic root of 1056326213 is about 1018.4335217385.

The spelling of 1056326213 in words is "one billion, fifty-six million, three hundred twenty-six thousand, two hundred thirteen".