431897485 has 16 divisors (see below), whose sum is σ = 545276592. Its totient is φ = 327974400.

The previous prime is 431897483. The next prime is 431897497. The reversal of 431897485 is 584798134.

431897485 = 1435² + 1436² + ... + 1619².

It can be written as a sum of positive squares in 8 ways, for example, as 6135529 + 425761956 = 2477^2 + 20634^2 .

It is not a de Polignac number, because 431897485 - 2¹ = 431897483 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 (431897483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20886 + ... + 36055.

It is an arithmetic number, because the mean of its divisors is an integer number (34079787).

Almost surely, 2^431897485 is an apocalyptic number.

It is an amenable number.

431897485 is a deficient number, since it is larger than the sum of its proper divisors (113379107).

431897485 is a wasteful number, since it uses less digits than its factorization.

431897485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57024.

The product of its digits is 967680, while the sum is 49.

The square root of 431897485 is about 20782.1434168856. The cubic root of 431897485 is about 755.8928285367.

The spelling of 431897485 in words is "four hundred thirty-one million, eight hundred ninety-seven thousand, four hundred eighty-five".