431026641 has 6 divisors (see below), whose sum is σ = 622594050. Its totient is φ = 287351088.

The previous prime is 431026627. The next prime is 431026643. The reversal of 431026641 is 146620134.

431026641 is a `hidden beast` number, since 4 + 3 + 10 + 2 + 6 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 254243025 + 176783616 = 15945^2 + 13296^2 .

It is not a de Polignac number, because 431026641 - 2⁷ = 431026513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431026643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23945916 + ... + 23945933.

It is an arithmetic number, because the mean of its divisors is an integer number (103765675).

Almost surely, 2^431026641 is an apocalyptic number.

It is an amenable number.

431026641 is a deficient number, since it is larger than the sum of its proper divisors (191567409).

431026641 is a wasteful number, since it uses less digits than its factorization.

431026641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47891855 (or 47891852 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 431026641 is about 20761.1811080198. The cubic root of 431026641 is about 755.3844458163.

Adding to 431026641 its reverse (146620134), we get a palindrome (577646775).

The spelling of 431026641 in words is "four hundred thirty-one million, twenty-six thousand, six hundred forty-one".