431161216 has 32 divisors (see below), whose sum is σ = 861022800. Its totient is φ = 215061504.

The previous prime is 431161187. The next prime is 431161219. The reversal of 431161216 is 612161134.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431161219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52356 + ... + 60028.

Almost surely, 2^431161216 is an apocalyptic number.

It is an amenable number.

431161216 is a deficient number, since it is larger than the sum of its proper divisors (429861584).

431161216 is an equidigital number, since it uses as much as digits as its factorization.

431161216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8126 (or 8114 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 431161216 is about 20764.4218797442. The cubic root of 431161216 is about 755.4630529327.

The spelling of 431161216 in words is "four hundred thirty-one million, one hundred sixty-one thousand, two hundred sixteen".