431420111 has 4 divisors (see below), whose sum is σ = 443080152. Its totient is φ = 419760072.

The previous prime is 431420089. The next prime is 431420117. The reversal of 431420111 is 111024134.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 431420111 - 2¹⁸ = 431157967 is a prime.

It is a super-3 number, since 3×431420111³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431420111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431420117) 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 3 ways as a sum of consecutive naturals, for example, 5829965 + ... + 5830038.

It is an arithmetic number, because the mean of its divisors is an integer number (110770038).

Almost surely, 2^431420111 is an apocalyptic number.

431420111 is a deficient number, since it is larger than the sum of its proper divisors (11660041).

431420111 is a wasteful number, since it uses less digits than its factorization.

431420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11660040.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 431420111 is about 20770.6550450389. The cubic root of 431420111 is about 755.6142310890.

Adding to 431420111 its reverse (111024134), we get a palindrome (542444245).

The spelling of 431420111 in words is "four hundred thirty-one million, four hundred twenty thousand, one hundred eleven".