431311322 has 12 divisors (see below), whose sum is σ = 700562430. Its totient is φ = 199066608.

The previous prime is 431311313. The next prime is 431311327. The reversal of 431311322 is 223113134.

It can be written as a sum of positive squares in 3 ways, for example, as 235898881 + 195412441 = 15359^2 + 13979^2 .

It is a junction number, because it is equal to n+sod(n) for n = 431311294 and 431311303.

It is not an unprimeable number, because it can be changed into a prime (431311327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 637697 + ... + 638372.

Almost surely, 2^431311322 is an apocalyptic number.

431311322 is a deficient number, since it is larger than the sum of its proper divisors (269251108).

431311322 is a wasteful number, since it uses less digits than its factorization.

431311322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276097 (or 1276084 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 431311322 is about 20768.0360650688. The cubic root of 431311322 is about 755.5507126259.

Adding to 431311322 its reverse (223113134), we get a palindrome (654424456).

The spelling of 431311322 in words is "four hundred thirty-one million, three hundred eleven thousand, three hundred twenty-two".