4045431431 has 2 divisors, whose sum is σ = 4045431432. Its totient is φ = 4045431430.

The previous prime is 4045431427. The next prime is 4045431449. The reversal of 4045431431 is 1341345404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4045431431 - 2² = 4045431427 is a prime.

It is a super-2 number, since 2×4045431431² = 32731030925845415522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4045431394 and 4045431403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4045431491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022715715 + 2022715716.

It is an arithmetic number, because the mean of its divisors is an integer number (2022715716).

Almost surely, 2^4045431431 is an apocalyptic number.

4045431431 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045431431 is an equidigital number, since it uses as much as digits as its factorization.

4045431431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 4045431431 is about 63603.7061105719. The cubic root of 4045431431 is about 1593.3882666597.

Adding to 4045431431 its reverse (1341345404), we get a palindrome (5386776835).

The spelling of 4045431431 in words is "four billion, forty-five million, four hundred thirty-one thousand, four hundred thirty-one".