431530045 has 4 divisors (see below), whose sum is σ = 517836060. Its totient is φ = 345224032.

The previous prime is 431530027. The next prime is 431530061. The reversal of 431530045 is 540035134.

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 178783641 + 252746404 = 13371^2 + 15898^2 .

It is a cyclic number.

It is not a de Polignac number, because 431530045 - 2²⁷ = 297312317 is a prime.

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, 43153000 + ... + 43153009.

It is an arithmetic number, because the mean of its divisors is an integer number (129459015).

Almost surely, 2^431530045 is an apocalyptic number.

It is an amenable number.

431530045 is a deficient number, since it is larger than the sum of its proper divisors (86306015).

431530045 is an equidigital number, since it uses as much as digits as its factorization.

431530045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86306014.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 431530045 is about 20773.3012542542. The cubic root of 431530045 is about 755.6784072350.

Adding to 431530045 its reverse (540035134), we get a palindrome (971565179).

The spelling of 431530045 in words is "four hundred thirty-one million, five hundred thirty thousand, forty-five".