1056345231 has 4 divisors (see below), whose sum is σ = 1408460312. Its totient is φ = 704230152.

The previous prime is 1056345217. The next prime is 1056345247. The reversal of 1056345231 is 1325436501.

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

It is not a de Polignac number, because 1056345231 - 2⁹ = 1056344719 is a prime.

It is a super-2 number, since 2×1056345231² = 2231730494112886722, 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 (1056345211) 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, 176057536 + ... + 176057541.

It is an arithmetic number, because the mean of its divisors is an integer number (352115078).

Almost surely, 2^1056345231 is an apocalyptic number.

1056345231 is a deficient number, since it is larger than the sum of its proper divisors (352115081).

1056345231 is an equidigital number, since it uses as much as digits as its factorization.

1056345231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352115080.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1056345231 is about 32501.4650592862. The cubic root of 1056345231 is about 1018.4396336297.

The spelling of 1056345231 in words is "one billion, fifty-six million, three hundred forty-five thousand, two hundred thirty-one".