431136645 has 8 divisors (see below), whose sum is σ = 689818656. Its totient is φ = 229939536.

The previous prime is 431136631. The next prime is 431136653. The reversal of 431136645 is 546631134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 431136645 - 2¹⁵ = 431103877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14371207 + ... + 14371236.

It is an arithmetic number, because the mean of its divisors is an integer number (86227332).

Almost surely, 2^431136645 is an apocalyptic number.

It is an amenable number.

431136645 is a deficient number, since it is larger than the sum of its proper divisors (258682011).

431136645 is a wasteful number, since it uses less digits than its factorization.

431136645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28742451.

The product of its digits is 25920, while the sum is 33.

The square root of 431136645 is about 20763.8302102478. The cubic root of 431136645 is about 755.4487018929.

Adding to 431136645 its reverse (546631134), we get a palindrome (977767779).

The spelling of 431136645 in words is "four hundred thirty-one million, one hundred thirty-six thousand, six hundred forty-five".