431615461 has 6 divisors (see below), whose sum is σ = 437785286. Its totient is φ = 425531400.

The previous prime is 431615413. The next prime is 431615477. The reversal of 431615461 is 164516134.

It can be written as a sum of positive squares in only one way, i.e., 423948100 + 7667361 = 20590^2 + 2769^2 .

It is not a de Polignac number, because 431615461 - 2⁹ = 431614949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431616461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37770 + ... + 47851.

Almost surely, 2^431615461 is an apocalyptic number.

It is an amenable number.

431615461 is a deficient number, since it is larger than the sum of its proper divisors (6169825).

431615461 is an frugal number, since it uses more digits than its factorization.

431615461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85763 (or 85692 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 431615461 is about 20775.3570607102. The cubic root of 431615461 is about 755.7282629899.

The spelling of 431615461 in words is "four hundred thirty-one million, six hundred fifteen thousand, four hundred sixty-one".