431222331 has 16 divisors (see below), whose sum is σ = 601945344. Its totient is φ = 274073184.

The previous prime is 431222317. The next prime is 431222339. The reversal of 431222331 is 133222134.

It is not a de Polignac number, because 431222331 - 2⁵ = 431222299 is a prime.

It is a super-2 number, since 2×431222331² = 371905397506147122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431222298 and 431222307.

It is not an unprimeable number, because it can be changed into a prime (431222339) 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 15 ways as a sum of consecutive naturals, for example, 11005 + ... + 31361.

It is an arithmetic number, because the mean of its divisors is an integer number (37621584).

Almost surely, 2^431222331 is an apocalyptic number.

431222331 is a deficient number, since it is larger than the sum of its proper divisors (170723013).

431222331 is a wasteful number, since it uses less digits than its factorization.

431222331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20690.

The product of its digits is 864, while the sum is 21.

The square root of 431222331 is about 20765.8934553753. The cubic root of 431222331 is about 755.4987456477.

Adding to 431222331 its reverse (133222134), we get a palindrome (564444465).

The spelling of 431222331 in words is "four hundred thirty-one million, two hundred twenty-two thousand, three hundred thirty-one".