431061005 has 4 divisors (see below), whose sum is σ = 517273212. Its totient is φ = 344848800.

The previous prime is 431060977. The next prime is 431061013. The reversal of 431061005 is 500160134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154803364 + 276257641 = 12442^2 + 16621^2 .

It is not a de Polignac number, because 431061005 - 2⁶ = 431060941 is a prime.

It is a super-2 number, since 2×431061005² = 371627180063220050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43106096 + ... + 43106105.

It is an arithmetic number, because the mean of its divisors is an integer number (129318303).

Almost surely, 2^431061005 is an apocalyptic number.

It is an amenable number.

431061005 is a deficient number, since it is larger than the sum of its proper divisors (86212207).

431061005 is an equidigital number, since it uses as much as digits as its factorization.

431061005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86212206.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 431061005 is about 20762.0086937656. The cubic root of 431061005 is about 755.4045198588.

The spelling of 431061005 in words is "four hundred thirty-one million, sixty-one thousand, five".