1056209131 has 2 divisors, whose sum is σ = 1056209132. Its totient is φ = 1056209130.

The previous prime is 1056209123. The next prime is 1056209173. The reversal of 1056209131 is 1319026501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1056209131 - 2³ = 1056209123 is a prime.

It is a super-2 number, since 2×1056209131² = 2231155456815550322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1056209131.

It is not a weakly prime, because it can be changed into another prime (1056203131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528104565 + 528104566.

It is an arithmetic number, because the mean of its divisors is an integer number (528104566).

Almost surely, 2^1056209131 is an apocalyptic number.

1056209131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056209131 is an equidigital number, since it uses as much as digits as its factorization.

1056209131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1056209131 is about 32499.3712400717. The cubic root of 1056209131 is about 1018.3958930092.

The spelling of 1056209131 in words is "one billion, fifty-six million, two hundred nine thousand, one hundred thirty-one".