431450505 has 12 divisors (see below), whose sum is σ = 747847620. Its totient is φ = 230106912.

The previous prime is 431450447. The next prime is 431450561. The reversal of 431450505 is 505054134.

It can be written as a sum of positive squares in 2 ways, for example, as 87385104 + 344065401 = 9348^2 + 18549^2 .

It is not a de Polignac number, because 431450505 - 2⁸ = 431450249 is a prime.

It is a super-2 number, since 2×431450505² = 372299076529510050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4793850 + ... + 4793939.

It is an arithmetic number, because the mean of its divisors is an integer number (62320635).

Almost surely, 2^431450505 is an apocalyptic number.

431450505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

431450505 is a deficient number, since it is larger than the sum of its proper divisors (316397115).

431450505 is a wasteful number, since it uses less digits than its factorization.

431450505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9587800 (or 9587797 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 431450505 is about 20771.3866893860. The cubic root of 431450505 is about 755.6319752777.

The spelling of 431450505 in words is "four hundred thirty-one million, four hundred fifty thousand, five hundred five".