1045205431 has 2 divisors, whose sum is σ = 1045205432. Its totient is φ = 1045205430.

The previous prime is 1045205423. The next prime is 1045205453. The reversal of 1045205431 is 1345025401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1045205431 - 2³ = 1045205423 is a prime.

It is a super-2 number, since 2×1045205431² = 2184908785983791522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1045205396 and 1045205405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045205401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522602715 + 522602716.

It is an arithmetic number, because the mean of its divisors is an integer number (522602716).

Almost surely, 2^1045205431 is an apocalyptic number.

1045205431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045205431 is an equidigital number, since it uses as much as digits as its factorization.

1045205431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1045205431 is about 32329.6370378636. The cubic root of 1045205431 is about 1014.8469540409.

The spelling of 1045205431 in words is "one billion, forty-five million, two hundred five thousand, four hundred thirty-one".